This is a GENUINE Spicer/Dana Shim Kit for the Dana 60 axle used by many manufacturers for many years. Ford, GM, Chrysler, Jeep, International and a multitude of industrial equipment manufacturers have used the good old Dana 60 at some time or another. This kit has all shims required to shim a Dana 60 when installing new components such as ring & pinion or carrier ect. We also offer the crush sleeve and special parts such as new part number seals ect. for the NEW 60's being used in heavy duty Chevy Vans since 2003, and some of the special Ford and Dodge applications these days. Questions? Call TOLL FREE 1-877-614-GEAR.