Treat yourself to the best brake service tools available by SSBC Performance Brakes. The SSBC Sure Stop Brake Pressure Gauge Kit indicates how much pressure you're getting at each caliper. The kit includes adapters for 6 common fittings: 5/16-24; 3/8 24; 7mm 1.00; 8mm 1.25; 10mm 1.50. Cut your diagnostic time in half with this kit! By knowing what your brake pressures are. You can easily diagnose faulty master cylinders, collapsed hoses, glazed rotors, faulty brake pads and much more.