Suitable for working on most twin and quad piston fixed calipers as well as single and twin piston floating calipers.Centrally located ratchet evenly spreads force when compressing pistons to ensure correct alignment and prevent damage to brake components.Convenient 360 degree ratchet swing allows the spreader to be placed at any position or angle.Made from premium metal and plastic for strength and durability, easy to use and can effortlessly compress brake pistons in seconds.Reversible lever for quick change between spreading and retracting. Suitable for commercial vehicles and most large trucks.