Includes lugbolts, ductcap, bearings and seals. Sold as a single side, not a pair. All drums are 1-pc. design, including hub and brake drum. Brake Type: Hydraulic, Electric, Fits Axle Capacity (lbs.): 6,000-7,000, Drum Size (in.): 12, Bolt Circle Pattern (in.): 6 1/2, Studs (qty.): 8, Seal Size (in.): 2 1/8, Inner Bearing Size (in.): 1 3/4, Outer Bearing Size (in.): 1 1/4, Hubs Included: 1