This is the most basic and most widely used type of tapered roller bearing. It consists of two main separable parts: the cone (inner ring) assembly and the cup (outer ring). It is typically mounted in opposing pairs on a shaft. The Timken wheel bearing cone and cup sets are designed to meet or exceed original equipment manufacturer's specifications. All bearings and cones are made from quality Timken certified steel and feature original equipment technology that optimizes bearing performance and lengthens maintenance intervals. Timken Trailer Bearing Set Specifications: Wheel Bearing cone #LM67048: I.D.= 1.2500" W= 0.6250" Wheel Bearing cup #L67010: O.D.= 2.3280" Brand: Timken MPN: SET6 Timken # LM67048 y Timken # LM67010 Timken engineered bearings feature precision tolerances, proprietary internal geometries and quality materials. Their tapered, spherical, cylindrical, thrust, ball, plain, miniature, precision and housed unit bearings deliver strong performance, consistently and reliably. INTERCHANGE PART NUMBERS : 0009815805, 0019810805KZ, 009311219, 010409607, 11055119, 11407629, 119002141301, 124333047, 12541277, 12547209, 142919, 1615339, 1619686, 181589, 211405625, 211405625A, 211405625C, 211405645C, 2421068, 2634106, 2644106, 3121263410, 31212634106, 320018, 328018, 3913499, 40210A0100, 40210A0600, 4096101, 457196, 5272036200, 60523334, 850133075, 8A1200C, 8L03029, 9036831002, 9036831030, 9036831036, 9036831067, 903683106700, 9098760000, 99905900100, 99905900600, 99905901800, A25169A, C15351, C3HA1200A, C3HA1200B, C3XZ1200A, C3XZ1200A1, E0ZZ7F431B, E3TZ1200A, E551718, MB002072, MB515026, N055110, N055111, YR29