We are looking to buy brake drums, wheel hubs and landing gear for the heavy duty trailer market in the USA. OEM numbers for the wheel hub, the most common number is the 20231, which is in most OEM numbers. KIC uses 001-00125, which is a wheel hub and brake drum sold together. The wheel hub uses bearing numbers HM218210/HM218248 for the inner cup and cone and HM212011/HM212049 for the outer cup and cone. Mounting is hub piloted with a bolt circle of 11.25 inches and 10 studs. If interested please contact us free.