Great Compatibility: Replace brake shoes on heavy-duty tractors and trailers. Simply hook the retaining spring loop and press down against the axles. High Quality: Made of high standard steel, solid and sturdy. Surface with black finish, never rust and durable to use. Easier Work: Simply hook the retaining spring loop and press down against the axle. Upgrade Design: Alternative to OTC 5081. Lets you use it as a lever against the axle to separate the spring loop from the brake shoe. Not only does it make the job easier than before, but also takes very little effort. .