Left.W/O AWD. Right.W/O AWD. A Bolt used to mount / lock the disc brake Caliper to the disc brake Caliper guide Pin. A Pin used with a float style Caliper, which mounts the Caliper to a Caliper bracket through a Caliper guide Pin Bolt, allowing the Caliper to slide freely during braking. Disc Brake Caliper Bolt. Disc Brake Slide. Piston guide. Support mount. Included with: Caliper, Caliper assembly.