●Portable Design: Rotate pistons back into the caliper so that the disc brake pads can be easily removed and replaced. ●Adjustable disc adapter: The 2 and 3 pin can be adjusted the width, directly suitable for the brake piston. "All range is 20~35mm." Without wasting time finding a suitable drive adapter. ●Easy to use: Attach the disc adapter and adjust to suitable range for your car, truck or 4 wheel drive vehicle and rotate the piston back into the brake caliper when installing new brake pads. ●Widely applicable: Fit most of 4 wheel drive domestic and import vehicles. It is compatible with Alfa Romeo, Audi, Citroen, Ford, Honda, Jaguar, Land Rover, Mazda, Mercedes, Mini, Mitsubishi, Nissan Lancer, Toyota, VW, Volvo, Vauxhall etc.