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, Kit Includes: 2x Rear Kugel Wheel Bearing and Hub Assembly (Both Side) + 2x Rear Kingstar Drum Brake Wheel Cylinder (Both Side) + 1x Rear Top Quality Drum Brake Shoe Set, Kit Variations: K7D-100724