1OE Number: The referencing OE number of this air brake spring tool is 5081, which is molded and designed depend on the original data, and maintaining the original car model. 2Fitment: The air semi spring brake tool is applicable for heavy duty tractors and trailers, which can be safely, quickly, and easily used for replacing brake shoes on tractors and trailers. 3Premium Material: The air brake spring tool is made of robust, solid and sturdy carbon steel, the heavy duty, anti corrosion materials assure the high performance of the brake repair brake adjusting. 4Unique Design: Features a hook in the middle to engage the J eye of a spring. Simply hook the spring loop and then press down against the axle quickly and easily. 5Efficient: The air brake spring installer tool is effective than other grips, screwdrivers to unhook the retaining springs, offers an easy quick and safe way to handle the job. 1 xAirBrakeSpringTool