K70-100457, Core made of High-Carbon AISI 52100 Chromium Alloy Steel features higher wear resistance, fatigue strength and steel hardness, Premium quality MolyPro™ NLGI Grade 2 Molybdenum Grease (MoS2) to minimize wear and reduce friction providing longer lasting performance, 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, Inner rings are made of Case-Hardened Steel for improved resistance to surface wear and contact fatigue, Thickness and metallurgy electronically validated for manufacturing consistency, SAE J1714, J2525 and J2535 validated for OEM load-carrying capacity, durability, and performance characteristics, Bearing already mounted and secured on the assembly to required OE torque specification for easier and faster installation, Part Reference Numbers : 1411-258935 WE61487 94-258935 S512352 NT512352 WH512352 WH512396 693352 H512352 H512396 512352 512396 BR930616 BM500016 BM500029 TRB -512396 TRB-512352, Kit Includes: 2x Rear Wheel Bearing Assembly (Both Side)