OTC S-Cam Air Brake Spring ToolFeatures and Benefits: OTC's S-Cam Air Brake Spring Tool eliminates makeshift, unsafe methods of unhooking and reconnecting brake shoe retaining springsFor use when replacing brake shoes on heavy-duty tractors and trailersSimply hook the retaining spring loop and press downLever action agains the axle makes the job a snapCrafted from high-grade materials to ensure quality performance over the lifetime of the tool