Galvanized Trailer Wheel Hub - 53101One piece cast hubs complete with pregreased bearings, seals, dust caps, cotter pin and lug nuts. 1 2" 20 Studs. Inner Bearing Code: L68149, Outer Bearing Code: L44649, Inner Race Code: L68111, Outer Race Code: L44610, Seal Code: 171255UCC Lug nuts on a 4. 5" bolt pattern Note: The UHI hub uses tapered roller bearing cones and cups. This configuration requires a minimal amount of end play that is provided at the time of assembly.