High-Speed Hub and Spindle Assemblies each assembly includes hub, spindle and parts as shown in the photograph. Bolt Pattern (number of holes x bolt circle): 6 x 5-1/2" Stub Length: 5-1/2" Stub Diameter: 1-3/4"Load Capacity: 1,750 lb.Assembly fits: 4-wheel-drive GMC 1/2-ton wheels.