Disc Brake Caliper Tool Kit Set Contains: . OTC-7553 - Four wheel disc brake adapter tool Fits 1-1/2” pistons. Usable two ways: one side fits GM Honda Mitsubishi Mazda Dodge Conquest and Subaru; other side fits Ford Pontiac Fiero Subaru and Toyota.. OTC-7554 - Four wheel disc brake adapter tool. Fits 1-11/16” pistons on Subaru Nissan Datsun and Ford Thunderbird.. OTC-7555 - Four wheel disc brake adapter tool. Fits GM 1-7/8” pistons.. OTC-7556 - Four wheel disc brake adapter tool. Fits GM 2-1/8” pistons.. OTC-7557 - Four wheel disc brake adapter tool. Fits GM 2-1/2” pistons. 7317A No -