Kodiak 10" Hub-and-Rotor Assembly, 5 on 4-1/2, Silver Cad - 3,500 lbs Single-piece assembly Machined process minimizes run out and warpingContaminants can't get in between rotor and hub Balanced unit provides smooth rideVented design effectively dissipates heat, preventing heat-related damage1/2" Wheel studs and industry-standard races are includedCast iron construction ensures a favorable friction coefficient for necessary stopping powerSilver cadmium plating provides superior corrosion resistance for freshwater or saltwater use400- to 600-Hour salt-spray rating Made in USA Specifications: Fits:Axle capacity: 3,500 lbsWheel size: 13" and larger Bolt pattern: 5 on 4-1/2"Wheel bolt diameter: 1/2"Outer diameter: 10-9/10"3-Year warranty Bearing, Race and Seal InformationBearings (sold separately)Inner bearing: L68149Outer bearing: L44649 Races (included)Inner race: L68111Outer race: L44610 Seal: RG06-050 (sold separately)Inner diameter: 1.719"Outer diameter: 2.565"