This is a CV rebuild kit for Tekno RC M6 and HD Driveshaft kits. Kit contains (2) replacement pins and (2) replacement barrels. They are for use in the following products: • TKR2213 -> Losi SCTE, Ten-T, 810 (center front) • TKR2217 -> Losi SCTE (center rear)This kit includes (2x) M6/HD barrels, (2x) 10.8mm pins (for 2213, 2217)