Log In Log In  |  Checkout   |  219 item(s)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
2 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
7 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 719, Drain Saddle Clamp / Valve
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x bulksf05, Koolermax Sediment Filter
2 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
4 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
3 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 723, Feed Water Adapter with Ball Valve
2 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
2 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
2 x CKV0402, Blue color Elbow Check Valve Elbow Type
4 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x bulkic21, Koolermax Inline Carbon Filter
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
2 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
3 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
2 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x bulkc10, Koolermax Carbon Block Filter
3 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
6 x Optional: 564 Membrane Filter Housing Wrench Opener
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x 752, DC Booster Pump w/ Transformer
2 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x bulk205, Carbon Block Filter
2 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
3 x KT-103, Optional Manual Membrane Flush Valve
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
2 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
2 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
2 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x bulk201, Sediment Filter
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
3 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
2 x 741-14, Diverter Valve for Countertop Water Units
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x MK420, Maintenance kit for RO565
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
2 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
2 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
2 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x bulk818, DI resin refill bags Di-Ionization media
2 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
5 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
7 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x bulk213, Inline Carbon Filter
2 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
6 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
2 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x 720, Feed Water Adapter with Needle Valve
1 x 565, Digital Pressure Gauge Tester Monitor
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 741-38, Diverter Valve for RO DI Water Systems
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x *Discontinued* RO585ERP
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x *Discontinued* RO6ALK
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 205, 5th stage final carbon filter
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x 706, Membrane Filter Casing Housing Assembly
2 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
2 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x *Discontinued* RO585A
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
View Cart$9,103.32
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Specials Log InCreate Account Checkout  Shopping Cart219 item(s)
1 x 385, 4th stage TFC 75/85 US membrane filter (every 2-3 yrs)
1 x UU Clips Pair Membrane to Filter, 2.5" to 2"
1 x PSW-280 Aquatec Pressure Switch 80 psi shut off 1/4 tubing TSO
1 x PSW-380 Aquatec Pressure Switch 80 psi shut off 3/8" tubing TSO
2 x SV-24DC-38-Plastic, KSD Solenoid Valve 3/8" 24V DC ESO
7 x Wrench 2 pcs 566 Standard Filter Housing Opener Double Better
1 x 719, Drain Saddle Clamp / Valve
1 x FM10, STEEL BRACKET SINGLE HOUSING MOUNTING SYSTEM
2 x 531, PAE RO Storage Pressure Osmosis Water Tank Container 3G
4 x 532w, PAE RO Storage Pressure Osmosis Water Tank Container 4G
1 x bulksf05, Koolermax Sediment Filter
2 x FV-14, Bobby Float Valve Side Mount RM292-12-N NSF USA
4 x CP-OR35+701 O-RING FOR WATERGENERAL BOTTOM FILTER HOUSING CASING
1 x SVkit, Pump Shutoff Switch Kit for Aquatec Booster Pumps ESO TSO
1 x BUNDLE PACK ANNUAL FILTER KIT FK3 WaterGeneral 102 150 (3 ITEMS)
1 x MK300, Maintenance kit for RO535, RO435, RO545, AR104H
1 x 721, Self-Piercing Valve, Feed Water Adapter for Copper Pipe
3 x MK550, Maintenance kit for RO585, RD102, RD106, RO6, K5, K6
1 x SET68, AQUATEC 6840 AC Pump Set Solenoid ESO Pressure Switch SET
1 x SV-24AC-38, KSD Solenoid Valve ESO 3/8" brass, 24V AC
1 x 723, Feed Water Adapter with Ball Valve
2 x 818, DI Resin Refill Bag 16oz (good for up to three refills)
1 x 727, Feed Water Adapter 3/8" compression adapter 1/4" inline bal
2 x 205, 2nd stage carbon block filter (replace every 12 months)
1 x DM-1, Inline Dual TDS monitor (meter) for RO DI System DM1
1 x Y3414BR, Garden Hose Y Adapter Shutoff Valve Brass Construction
1 x 578b, TDS-3 Battery Batteries for #578 TDS Water Quality Meter
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle RO585
2 x CKV0402, Blue color Elbow Check Valve Elbow Type
4 x 701, FH1014 Filter Housing Chamber Casing White Color 1/4 FPT
1 x bulkic21, Koolermax Inline Carbon Filter
1 x BUNDLE PACK Annual Filter Kit FK4 WaterGeneral 585 106 (4 ITEMS)
1 x FM40, STEEL BRACKET DOUBLE HOUSING 10" STANDARD
2 x RF62, Replacement filter for CT-6000, UC7000, SW-1, and SW-1C
1 x SET88 Aquatec 8852 AC Booster pump Solenoid ESO Pressure Switch
3 x 205 2nd stage solid carbon block filter (replace every 12 month)
1 x PSW-2100 Aquatec Pressure Switch 100 psi shut off 1/4 tubing TSO
1 x FM90, STEEL BRACKET SINGLE HOUSING MOUNTING BIG BLUE WH SYSTEM
2 x PSW-240 Aquatec Pressure Switch 40 psi shut off 1/4" tubing TSO
1 x bulkc10, Koolermax Carbon Block Filter
3 x 701C, FHC1014 Filter Housing Chamber Casing Clear Color 1/4 FPT
6 x Optional: 564 Membrane Filter Housing Wrench Opener
3 x 532b, PAE RO Water Storage Pressure Osmosis Tank Container 4G
1 x 335, 3rd stage TFC 35/45 US membrane filter (every 2-3 yrs)
1 x 752, DC Booster Pump w/ Transformer
2 x 4044-K Male Elbow Fitting Compression type 1/4" OD 1/4" NPT
1 x PSW-3100 Aquatec Pressure Switch 100 psi shut off 3/8 tubing TSO
1 x 799, Siphon Pump Drinking Water Liquid Fluid Oil Manual Trasfer
1 x bulk205, Carbon Block Filter
2 x 532wpg, PAE RO water pressure white tank bladder gauge valve 4G
2 x 745, AFAN0409 Female Garden Hose / Laundry Hose Adapter
2 x Optional 225UP 5th stage Inline Alkaline upgrade(includes media)
3 x KT-103, Optional Manual Membrane Flush Valve
1 x 225UP, 5th stage Inline Alkaline upgrade (includes media)
2 x FV-15, Bobby Float Valve Top Mount RM292P-N UNS CEL NSF USA
2 x 4042-K Male Elbow Fitting Compression type(membrane housing use)
2 x FPK, High Quality Fitting and Connector 3/8" (Value-Pack)
1 x SV-24AC-14, Solenoid Valve ESO for Aquatec pump 1/4" wiring
2 x 752set, DC Booster Pump Transformer Solenoid Pressure Switch All
1 x 532bpg, PAE RO water pressure tank blue bladder gauge valve 4G
1 x bulk201, Sediment Filter
1 x 709C, Disc Shape Auto Shut Off Valve 4-way Four Way Valve
1 x 1070, PAE LARGE RO Storage Pressure Tank 14 GALLON 14G
1 x SV-24DC-14, Solenoid Valve ESO 1/4" plastic, 24V DC
3 x 213, 5th or 6th stage inline carbon filter (replace in 12 mons)
1 x 6044-combo Compression Type Fitting Elbow and Tee fitting
2 x 741-14, Diverter Valve for Countertop Water Units
1 x 365, 4th stage TFC 50/65 US membrane filter (replace 2-3 yrs)
2 x Optional 5th or 6th Stage upgrade inline DI filter(color change)
2 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x MK420, Maintenance kit for RO565
1 x SV-24AC-14, Solenoid Valve for Aquatec pump only 1/4" 24VAC ESO
2 x PSW-360 Aquatec Pressure Switch 60 psi shut off 3/8" tubing TSO
1 x TMR-UV-6W, Replacement UV Ballast Transformer 6 Watts for 602 UV
2 x 213, 4th stage inline carbon filter (replace every 12 months)
1 x UU Clips Pair Standard Filter to Standard Filter, 2" x 2"
2 x FPK, 6 pcs Fitting Pack Union Connector 1/2 x 3/8 inch
1 x 6044-K Tee Fitting Compression Type 1/4"OD 1/4" NPT
1 x bulk818, DI resin refill bags Di-Ionization media
2 x FPK, 6 pcs Fitting Pack Union Connector 3/8 x 1/4 inch
5 x Optional: 566 Filter Housing Wrench Opener WaterGeneral System
7 x 201, 1st stage sediment filter (replace every 6-12 months)
1 x SV-110AC-14, Solenoid Valve 1/4" plastic 110VAC ESO
1 x bulk213, Inline Carbon Filter
2 x CBV-0404, Tank Ball Valve to 1/4 tubing *standard RO tank size*
1 x 7044-K Union Tee Connector Fitting Compression type 1/4"
1 x PSW-340 Aquatec Pressure Switch 40 psi shut off 3/8" tubing TSO
1 x 673, Replacement UV Lamp Light for 602 (6 Watts)
6 x 205, 3rd stage solid carbon block filter (replace every 12month)
1 x PSW-260 Aquatec Pressure Switch 60 psi shut off 1/4" tubing TSO
2 x CPR-150G, Pressure Regulator with Pressure Gauge (0-125 psi)
1 x DM-2, Inline Dual TDS monitor (meter) for RO DI System DM2
1 x 399, 4th stage TFC-100 US membrane filter (every 2-3 yrs)
1 x 759, Aquatec Demand Delivery Pump 5853-7E12-J524 Commercial 1.7G
2 x 602, UV Ultra Violet Sterilization Light Bulb ystem (6 watts)
1 x PSW-350, Pressure Switch for RO Booster Pump 1/4" TSO
1 x 720, Feed Water Adapter with Needle Valve
1 x 565, Digital Pressure Gauge Tester Monitor
1 x ACT-820-JG Aquatec Pulsation Dampener Accumulator Pressure Tank
1 x UU Clips Pair Membrane to Membrane, 2.5" to 2.5"
1 x 4044-K qty 2 Male Elbow Fitting Compression type 1/4"
1 x 741-38, Diverter Valve for RO DI Water Systems
2 x FPK11, High Quality Fitting and Connector 1/4" (Value-Pack)
1 x Y3414CH, Garden Hose Y Adapter Shut-Off Valve Metal Construction
1 x 1st stage SF05 sediment filter (replace every 6-12 months)
1 x *Discontinued* RO585ERP
2 x KM701, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x .K6NTF KoolerMax K6ALK RO shell without tank and faucet
1 x Value Pack- Entire 3 Years of Replacement Filters Bundle HK120
1 x B2010, 20" Big Blue Filter Housing Cartridge WH20 WH25 WH250
1 x .K6150P, KoolerMax 150GPD 6 Stage RO System w/ Booster Pump
1 x *Discontinued* RO6ALK
1 x MK800, Maintenance kit for AR122, AR125, HK120, RD150, RO155
1 x 225, 5th stage Inline Alkaline filter with clear case (annual)
1 x Special, Output Conversion Kit Convert from 1/4" to 3/8"
1 x FK-53, Replacement Filter Pack SED2005 CB2010 for RD322 RO260
1 x DB40, DI Resin Refill Bag for DI210, RD322
1 x 205, 5th stage final carbon filter
1 x 2542-K, Female Connector 1/4 OD 1/8 FNPT Compression Fitting
1 x 2.CB2010, 2nd stage carbon block filter 20" inch for RD322 RO260
1 x 706, Membrane Filter Casing Housing Assembly
2 x 3150, 4th stage TFC-150 US membrane filter (every 2-3 yrs)
1 x .RO260 Aquarium 300G REVERSE OSMOSIS AEROPONICS HYDROPONICS RO
2 x 335UP, Upgrade Kit TFC 35 gal/day (includes US membrane filter)
1 x FKD-66, Replacement Filter Pack SED2005 CB2010 DB40 for RD322
1 x KF511UP SUBSTITUTE/Upgrade Faucet CHROME GOLD TRIM CROSS HANDLE
2 x B2012, 20" Long Slim Filter Cartridge Housing RO260 RD322
1 x Special, Single Stage Housing Bracket Shell Connection Kit
1 x .K6A KoolerMax 75GPD 6STAGE Alkaline pH REVERSE OSMOSIS RO FILTE
2 x Parts, Ro Water System Installation Parts Bag 1/4"
1 x KM701C, Special Koolermax Filter Housing Canister Casing 1/4 FPT
1 x 215, 5th or 6th Stage Refillable inline DI filter (color change)
1 x 213, 5th stage inline carbon postfilter (replace every 12months)
1 x AMTU-0404 Male Tee Union Connector NPT Thread 1/4" Quick Connect
1 x .AR150P, AQUARIUM & DRINKING 2 OUTPUTS Reverse Osmosis RO+DI+P
1 x *Discontinued* RO585A
1 x 1.SED2005, 1st stage sediment filter 20" inch for RD322 RO260
1 x .K6150PNTF, KoolerMax K6150P RO System Shell without tank faucet
1 x Optional 566 Filter Housing Wrench Case Opener KoolerMax System
1 x 3rd stage C10 carbon block filter (replace every 6-12 months)
View Cart$9,103.32

ARD, Reducer Fitting Straight Tube OD Stem OD [ARD]

$3.50

ARD, Reducer Fitting Straight Tube OD Stem OD



* ARD, Reducer Fitting Straight Tube OD Stem OD

* Please choose size from the selection box below. First number is tubing OD and second number is Stem OD Outside Diameter (Pipe sizes can be confusing even for the experienced user. Pipe size is not the actual outside or inside diameter of the pipe but is the industry accepted designation. If you have any question please email us first.)
* 1/4" Tube OD x 3/8" Stem OD ARD0406
* 3/8" Tube OD x 1/2" Stem OD ARD0607


* Water & foods use: Products are manufactured from safe, non-toxic materials meeting the requirements of the US FDA, ERAS, ANSI/NSF-51,61, and SK Zert. Our products are widely used in water purification, food/beverage, and pneumatic systems.

* Function & Quality: Provides quick and convenient assembly-saving time & expense.

* Collet Design: Our unique oval collet design is superior and more practical, and is an improvement welcomed by our world wide customers in all industries.

* Additional Applications: Beyond water and food use, fittings can be used with air, gases, vacuum, & liquids. All connections can be assembled & disassembled repeatedly. A broad range of sizes covers a broad scope of applications.

* We carry different fittings in variation of sizes: 1/4", 3/8", or 1/2" adapters, connectors, fittings, or valves.  Most are not listed online, to avoid confusion to majority of RO system customers.  

* Send us a message with specification, intended application, and image of your setup or old fitting  to check if we have what you need. 

Available Options:

Size Combination:

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