One piece cast hubs complete with pregreased bearings, seals, dust caps, cotter pin and lug nuts. 1/2"-20 Studs.. Inner Bearing Code: L44643, Outer Bearing Code: L44643, Inner Race Code: L44610, Outer Race Code: L44610, Seal Code: 125255UC. 4 Lug: Lug nuts on a 4" bolt pattern.