Features and Benefits: Works on twin and quad piston calipersWorks on single and twin piston floating calipersCentrally located ratchet evenly spreads force in a parallel manner to prevent misalignment of pistonsRatchet Technology gives a full 360 degree swing so that the spreader may be placed at any positionMade in U.S.A. The 4-in-1 Brake Caliper Spreader works on twin and quad piston calipers, as well as single and twin piston floating calipers. 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. Extended reversing lever allows for easy change from spreading to retracting.