Samix 13x16mm Shim Kit. These shims are used to shim the backlash between the ring and pinion gears in 1/8 scale differentials. These are installed on the outside of the differential between the bearings and bulkhead, and when set correctly will create optimal tooth contact between the two gears.
Features: Stainless steel shims Suitable for a variety of applications Includes plastic storage 3 types of shims included