Set of stainless steel rear brake pistons for all Maserati Sebring and Mexico models. It is for 2 rear brake calipers. The set comprises: 2 pistons1.685diameter x 1.130long and 4 pistons1.187diameter x 1.130long. These pistons are correct for the 3 piston Girling type 12/3HP rear brake caliper. Girling seal kit # SP2524.