ISO / IATF 16949 certified, direct fit and made from high quality materials to meet orginal specifications Well-lubricated guide pins reduce unnecessary wear and prevent squeaky braking Pressure tested and quality inspected to gaurentee a strong, reliable caliper Brake calipers are a vital component of your vehicle's brake system. Calipers are responsible for slowing your vehicle, which they do by squeezing the brake pads against the rotors. A seized or compromised caliper can cause your vehicle to pull to one side, increase your vehicle's stopping distance, or even cause you to lose brake function. Professional Installation is Highly Recommended.