Core made of High-Carbon AISI 52100 Chromium Alloy Steel features higher wear resistance, fatigue strength and steel hardness, TOR exclusive USA-engineered powdered metal gusher bearing design enables grease to flow through the bearing to the stud for reduced friction and enhanced strength and stability, Premium quality MolyPro™ NLGI Grade 2 Molybdenum Grease (MoS2) to minimize wear and reduce friction providing longer lasting performance, Premium cover plate design allows for tighter tolerances vs traditional cover plate designs, providing a more durable and extended life for the tie rod, 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, TOR engineered steel composition results in a stronger component. Our full-ball metal stud provides 36 degrees of smooth, consistent, rotational movement resulting in more responsive steering, Inner rings are made of Case-Hardened Steel for improved resistance to surface wear and contact fatigue, Kit Includes: 2x Front Kugel Wheel Bearing and Hub Assembly (Both Side) + 2x Front Outer TOR Steering Tie Rod End (Both Side), Kit Variations: KBB-131314 KBB-131406 KBB-131476 KBB-131547 KBB-131656 KBB-131838 KBB-131962 KBB-132125 KBB-132197 KBB-132223 KBB-132311 KBB-132371