Bolt pattern: 8 on 6.5"; 1/2"-20 studs installed; bearing races installed; Kit also included: 2x 25580 inner cone bearings and 2x 14125A outer cone bearings; 2 x Grease seals 2.25" x 3.371",; 2 x E Z lube grease caps with rubber plugs; 16 cone wheel nuts 1/2"-20 thread ; Works on most 7,000 lbs axles in the market