This is a Kodiak Trailer replacement integral dacromet coated 5 Lug hub and rotor. This is Kodiak part # ROTOR/HUB-10-DAC. The rotor is 10 inches in diameter. The hub and rotor are machined as one piece which results in a better balanced unit and a smoother ride. This Integral hub and rotor combo is designed to fit on 3,500lb capacity axles and uses a 5 on 4 ½ inch bolt pattern. The hub/rotor is Dacromet coated to help resist rust in salt water environments. The studs are a ½-20 thread. The rotor is vented to help dissipate heat faster than a solid rotor. Kodiaks disc brake hub and rotor combination uses a 1 1/16 inch outer bearing (44649) and a 1 3/8 inch inner bearing (68149). Kodiak warranty’s all their dacromet coated products for 3 years.