Hydraulic jack valve release screw knob is made of Aluminum
Knob is Compatible with Harbor Freight hydraulic bottle jacks and used for 6, 12, or 20 ton mandrel presses and other bottle jacks with a 3/8" diameter valve release screw.
Easy Install :Slide Knob on over the release screw, turns 1/4 turn and secure the set screw using a 5/32 hex wrench (Allen wrench) for a quick and hassle-free installation.
Important Note :Valve release screw knob is intended for hydraulic press applications only and should not be used for lifting vehicles.
In Package : 1×hydraulic press jack valve knob, 1×set screw, and 1×Allen wrench.