4 Piston Vented Rotor Style Caliper, Billet 6061 Aluminum Construction, 1 3/4 Diameter Pistons, 1/8-27 NPT Inlet and Bleeder Screw Port, Uses 6.63 Square Inch Pad, Fits Rotors .81" Thick|Aerospace Components 4 Piston Vented Rotor Style Caliper Billet 6061 Aluminum Construction.
