Complete 12 Bolt Built to Order Rear End Packages. All Moser 12 Bolt Housings are designed and manufactured in the U.S.A. using Moser Engineering owned Casting Boxes. Package includes; New Moser 12-Bolt Made in the U.S.A. Housing, with OEM located mounting provisions, seamless steel tubing (3" O.D., 1/4" wall), custom alloy axles (30, 33, or 35 spline), bearings, studs, seals, heavy duty retainer plates, new housing ends, t-bolt kit, differential, pinion yoke, ring & pinion, rear cover, set up with Timken bearings. Many options available! Unit comes with Differential assembled, axles are not installed and options such as brakes are shipped in kit form. Want your unit completely assembled? Try our MUSCLE PAK line of rear ends. Standard Finish is no coating (bare metal), Powder Coating optional (adds 2-3 Days processing time).