【Efficient Tool】- It helps to push the brake piston of the brake caliper backward without damaging the piston surface. 【Material】- Chemically blackened steel spreader plates, chrome screws with connecting rods, durable.(2"x2-1/4") Each plates, Max Spread 3-1/4". 【Feature】- Equipped with tommy bar and can be used with 1/2'' drive ratchet wrench or 0.83'' spanner. Suitable for most ATE, Bendix, Delco and Girling calipers. 【Widely Used】- Compatible for Nissan, Alfa, Audi, Fiat, Ford, GM(Vauxhall/Opel), Peugeot, Renault, Rover, VW, Porsche.