Specification Brand : General Pump BulletPoint : Sold on Amazon BulletPoint1 : Made from 1144 stress proof steel BulletPoint2 : steel shaft adapter to convert a 7/8 Tapered crankshaft to a 1 inch shaft. The adapter is 3 inches long and includes the custom key needed to go from the adapter to your pulley or clutch. BulletPoint3 : You must use the through bolt to hold this adapter onto the engine. BulletPoint4 : But if your crank measures 7/8" or .875 before the taper then this is the adapter for you. Converts it to a straight size of 1 inch. BulletPoint5 : Effortless Repairs, Superior Performance - Trust Our Replacement Parts for Lawnmowers, Brushcutters, and Chainsaws. Color : Gray ExteriorFinish : Machined ExteriorFinish1 : Stainless Steel ExteriorFinish2 : Chrome ExteriorFinish3 : Brass ExternallyAssignedProductIdentifier : 00197111302632 ExternallyAssignedProductIdentifier1 : 0655646740164 ExternallyAssignedProductIdentifier2 : 655646740164 FitType : Vehicle Specific FuelType : Gasoline IncludedComponents : Comes with housing ItemName : Unloader Valve 3500 PSI 3-4.2 GPM ItemPackageDimensions_Height : 9.2964 centimeters ItemPackageDimensions_Length : 3.2004 centimeters ItemPackageDimensions_Width : 5.1054 centimeters ItemPackageQuantity : 1 ItemTypeKeyword : pressure-washer-accessories ItemTypeName : Pressure Washer Accessories Manufacturer : SUPROJDM Material : Alloy Steel MaximumFlowRate : 2.5 gallons_per_minute MaximumPressure : 4000 pounds_per_square_inch ModelName : pressure washer gun ModelNumber : Z6 NumberOfItems : 1 PartNumber : ZK71 PowerSourceType : Mechanical ProductDescription : ZK71 GP K7 Flow Sensitive Unloader Valve 2.9-4.2 GPM @ 3500 PSI by General Pump. Eliminates high pressure in all lines while unit is in bypass mode. Maximun PSI 3500, Maximun Temp 165 deg F., 3/8 in. FNPT Inlet, 3/8″ MNPT Outlet, 3/8 in. FNPT By-Pass. Choose model with orifice size carefully due to the fact that these flow sensitive unloaders will not work properly with flow rates outside of their flow range. Available orifice sizes: ZK71 3.0 – 4.2 GPM, ZK72 4.2 – 6.6 GPM, ZK73 6.6 – 10.8 GPM. ProductSiteLaunchDate : 2019-08-28T12:55:31.858Z PulleyType : v_belt RecommendedUsesForProduct : Lawn Mower Size : Size A Style : Above Ground SupplierDeclaredDgHzRegulation : not_applicable SupplierDeclaredHasProductIdentifierExemption : 1 UnitCount : 1 WarrantyDescription : 90days