Includes nuts, bolts, 2 bearings, 2 cups, 1 grease seal, and 1 dust cap. Inner Bearing Size: 1in.. Inner Hub: LM44643. Outer Bearing Size: 1in.. Outer Hub: LM44643. Hub Length: 3 1/2in.. Distance Bet. Race: 1 11/16in.. Hub Capacity: 700lb.