Caliper mount bolt. Left.PARKING BRAKE. Right.PARKING BRAKE. 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. Caliper Parking Brake. Disc Brake Caliper Bolt. For Parking Brake Caliper. mount. support guide. Disc Brake Slide. Hex - Head Screw 10X85.