Lisle spring clutch eliminates ratchet problemsRange: 3-1/2" to 7"Height: 7"Packaged in a boxShipping weight: 1 lb. 11 oz.The lisle spring clutch assures a proper fit on the piston and a positive locking action. Range 3-1/2 inches to 7 inches.Brand: Lisle, Model: 21000