The Hotchkis GM upper trailing arm bushing install and removal tool allows for easy removal and installation of new bushings in GM 10 and 12 bolt rear ends commonly found in GM A-Body vehicles. This tool makes a great addition to any professional or backyard mechanics tool box. The days of pounding on your freshly powdercoated axle with a sledge hammer are over.Installation InstructionsCertificate of OriginWarrantyFor Easy Removal And Installation Of New Bushings