Forged Billet Hat Mount Hubs for the C10 Pickup are made from premium grade alloy billets are forged into shape under high heat and pressure, then CNC machined for precise fit on each spindle application. C10 hubs are intended for use with used with aluminum mounting hats. C10 Hubs are Double drilled in a 5 x 4.75" and 5 x 5.00" wheel lug pattern. Hubs include bearing races. Uses a press in bearing cap, available separately (Part # 270-12403).