Kit includes: Short 10 mm drill bits (36 mm length) HEX (hexagonal socket) H4, H5, H6, H7, H8, H10, H12;Short 10 mm drill bits (36 mm length) SPLINE M5, M6, M8, M10, M12;Short 10 mm drill bits (36 mm length) TORX T20, T25, T27, T30, T40, T45, T50, T55, T60; HEX (Allen) H4, H5, H6, H7, H8, H10, H12;SPLINE M5, M6, M8, M10, M12 10 mm long (80 mm long) drill bits 10 mm long bits (80 mm long) TORXT20, T25, T27, T30, T40, T45, T50, T55, T60;10 mm bit adapter for 3/8 and 1/2 square fit. High quality and durable bits. Made of high quality silicon-chromium-vanadium steel (S2), anticorrosive lubricated, sandblasted.