Keeping you Ready for the Road Ahead , the Webb Ultra Grip RH MC225 Truck Air Disc Brake Caliper / Carrier Assembly increases your semi truck's braking efficiency and provides proper mounting for the brake caliper. The carrier ensures the brake caliper is properly secured with proper alignment with the brake rotor. The caliper boasts twin return springs with a unique actuation block ensuring caliper or lever binding elimination. Built tough, the caliper’s durable ductile iron housing with special formulation proves increased strength and durability under the toughest conditions. Failure to replace calipers and carrier assemblies when needed can lead to increased downtime and cost. Gain the adequate handling of stopping power, backed with the confidence you need for your braking system. FleetPride is your First Click in Heavy Duty .