Knob for Bottle Jack Valve Release Screw On Harbor Freight Hydraulic Press Made of 6061 Aluminum (3/8 Material The hydraulic jack button is made of aluminum, 6061 aviation aluminum, not easy to deform under high pressure, very strong and durable. Precise Machining After special technical processing, the corners are also very smooth, will not hurt the operator. Make your hydraulic press easier to use and at the same time safer! 7/16 Jack Knob 3/8" Knob For Bottle Jack Valve Release Screw On,Compatible With Harbor Freight Hydraulic Press, Made Of 6061 Aluminum(Silver Jack Pressure Release Knob Gemels - Quick Release Couplings | Flowfit Suitability: The pressure release button is specially designed for Harbor Freight hydraulic jacks and is suitable for 7/16 inch diameter jacks, as well as vertical presses of 6, 12 and 20 tons. - Material: 6061 grade aluminium., - Shape: cylinder., Colour: silver. VEVOR 12 Ton Hydraulic Bottle Jack User Manual Easy to Use After turning the release button 1/4, tighten the screw with the set screw (requires 5/32 hex keys for reinforcement).
