K7D-101070, Core made of High-Carbon AISI 52100 Chromium Alloy Steel features higher wear resistance, fatigue strength and steel hardness, Engineered with Heat-Flowed cast iron to give our wheel cylinders the ideal balance between tensile strength and hardness, Exclusive MetalliX™ Low Resin Semi-Metallic compound provides unmatched braking performance (abrasive friction, high temperature tolerance, quicker compound warming) while maintaining low dust and noise, Premium quality MolyPro™ NLGI Grade 2 Molybdenum Grease (MoS2) to minimize wear and reduce friction providing longer lasting performance, Anodized coating provides complete 360º protection against rust, moisture and oxidation, Engineered with High Carbon SteelRX™ alloy (Pressure Resistant, Thermal Conductive) and dipped in an Anti-Rust Black Paint to improve durability, Exclusive multi-lip seals are made with ProSeal™ Nitrile Rubber (NBR) which can successfully function at high delta of temperatures while retaining its flexibility and sealing performance, Reinforced pistons (FeSi) feature higher tolerance to pressure and increased wear resistance, Kit Includes: 2x Rear Kugel Wheel Bearing (Both Side) + 2x Rear Kingstar Drum Brake Wheel Cylinder (Both Side) + 1x Rear Top Quality Drum Brake Shoe Set