AB Tools-US Pro Brake Piston Wind Back and Bearing Slide Hammer Removal Tool 12mm - 30mm AT359. Removes brake pistons from callipers and small bearings. Includes slide hammer for seized pistons. Includes adapters; 19mm - 30mm. Suitable for use on motorcycles, ATVs and small cars. For reducing the time taken when dismantling motorcycle brakes. Bought by mistake, never used.