The All Balls Rear Differential Bearing Kit contains all bearings, seals and hardware needed to repair or refurbish your machine's differential. Double lip Type TC seals. Precision ball bearings. Machined race needle bearings. Repair sleeve for worn pinion shafts - The pinion shaft can be machined and this sleeve installed, saving hundreds of dollars. Note: Kit contents will vary by fitment and are subject to change. Kit Includes: 2 ball bearing(s). 2 needle bearing(s). 3 seal(s). 1 O-ring(s).