TRW's Drum In Hat (DIH) park brakes are intended for larger, four-wheel disc-brake vehicles. Service braking is accomplished by the rear caliper while the DIH park brake provides improved parking functionality. Mounting for the caliper can be incorporated into the DIH adaptor when the opportunity exists. With sizes available for a wide variety of applications, TRW's DIH park brake applications are available to passenger car and light to heavy duty truck segments. TRW Drum-in-Hat park brakes offer the following features: •Applications from passenger cars to heavy duty trucks up to 8,800kgs (19,500lbs) GVW •Available in various sizes: 172mm x 22mm to 242mm x 62mm  Mounting/guiding - integrated rails for RPS, bosses for Colette designs •Flexibility for a variety of cable attachment designs •High brake factor duo-servo geometry •Integrated rotor splash shield