This is a pack of ten replacement Tekno RC 13x16x.1mm Differential Shims, and are intended for use with the Tekno R/C EB48 electric 1/8 buggy. These are the large shims that are installed on the outside of the differential between the bearings and bulkhead, and are used to shim the backlash between the front and rear ring and pinion gears.
Note: This list may not be 100% accurate or up to date, and is meant to be used as a guideline for compatibility.