HIGH QUALITY: The hydraulic jack valve release screw knob is made of high quality 6061 aluminum material and CNC cutting technology, the product is highly accurate, corrosion resistant and durable.
EASY INSTALLATION: Slide the hydraulic jack valve release screw knob onto the release screw, turn it 1/4 turn, you need to use a 5/32 hex wrench (Allen wrench) to fix the set screw on the end of the knob in place, then the installation is completed.
WARM NOTE: This part is designed for use with Harbor Freight hydraulic bottle jacks, do not use when lifting vehicles, for hydraulic press applications only!
SUITABILITY FOR: For use on 6, 12 or 20 ton mandrel presses, but will also work on any bottle jack with a 3/8 diameter valve release screw.
UPGRADED DESIGN: the knob adopts knurled design to enhance the sassafras force of the knob, better hand feeling and grip.