High-quality triple square bit set (10-piece) in blow-molded case. Also known as 12-point and spline bits. This kit is specifically designed for your European automobile. It includes all nine (9) known sizes of triple square bit (M4, M5, M6, M8, M10, M12, M14, M16, and M18) PLUS an extra long M10 for inner CV bolt access. Bits are made of the highest grades of steel. This set is NOT recommended for head bolt removal due to length and clearance issues. This set is NOT impact tool rated.