The Lang Tools 4-in-1 Brake Caliper Press, No. 279, works on twin and quad piston calipers, as well as single and twin piston floating calipers. The centrally located ratchet evenly spreads force in a parallel manner to prevent misalignment of pistons. Ratchet technology gives a full 360-degree swing, so that the spreader may be placed at any position. An extended reversing lever allows for easy change from spreading to retracting. This tool is made in the U.S.A.