Safety Wire Drill Jig For Metric Nuts And Bolts, Nut Drill Jig Allows The Safety Wire Holes To Drilled Through The Head Of Bolts Or Nuts On A Diagonal Angle. Jig Accepts Up To 3.5MM Drill Bit. Bolt Jig Has 6 Sizes: M6 X 1.0MM / M8 X 1.0MM / M8 X 1.25MM / M10 X 1.25MM / M10 X 1.5MM / M12 X 1.5MM.