Just take out of the box and install-these hub kits are already assembled and factory pregreased. Greasing both bearings is now easy, as the convenient zerk fitting and rubber grommet in the dust cap enable fresh grease to be forced in and old grease to be forced out. No need to disassemble the hubs. Each kit includes bearings, seal, dust cap, cotter pin, and lug nuts or lug bolts. One-year limited warranty. 5-stud 4 1/2" bolt pattern Straight spindle shape 1-3/8" spindle diameter 4-1/2" wheel diameter 1,750 lb.