The Lang Tools Brake Spring Fork Tool, No. 857-O, is designed for quickly and safely installing and removing return springs on commercial trucks and trailers with air brakes with an S-cam design. It features a top claw design that cups the return spring to prevent it from sliding off. The tool is made from heat-treated high-carbon alloy steel with a black oxide finish for corrosion resistance. The brake spring fork tool is made in the USA.