PERFORMANCE MACHINE (PM) Four-Piston Differential-Bore Caliper Shim Kit — 3/8 in caliper mount, 0.015 in/0.03 in/0.06 in
3/8 in caliper mount shim kit for compatible 4-piston differential-bore calipers. Includes two each: 0.015 in, 0.03 in, 0.06 in.