Tappet Socket for Valves

This is a 3mm X 3mm Tappet wrench for adjusting valve clearance on motorcycles. Hope this saves some other people from needing to spend $30 on a special tool.

V3: Double the knurling added, as well as a champher around the bit to help locating.

V4: on the suggestion of /u/lackimagination I've added 11.5 degree graduation to the outside diameter. I Suggest using ~.35mm nozzle and 25-35 speed to get all those details we defined.