The Lang Tools Brake Spring Fork Tool, No. 857-O, is designed to quickly and safely install and remove return springs for S-Cam air brakes found on both commercial trucks and trailers. It features a top claw design that securely cups the return spring to prevent it from sliding off or damaging nearby hoses and components, and helps speed up brake and wheel-end maintenance overall. The tool is made in the U.S. using heat-treated high-carbon alloy steel with a black oxide finish for corrosion resistance.