Offers highly robust drilling in metal, especially with impact drivers. Twist drill bit is precision-ground from solid metal and has an oxide-coated flute, giving it an excellent surface quality for slicing through materials with reduced wear. Suitable for use on alloyed and non-alloyed steel, cast steel, cast iron, sintered iron, non-ferrous metals, sheet metals and plastics. Compatible with a ¼hex-shank system for universal use with drill drivers, impact drivers and drill stands. Hex shank for maximum power transfer in standard three-jaw drills and hexagonal drill driver chucks. High-Speed Steel 1/4" Hex Shank Suitable for Cast Iron, Cast Steel, Non-Ferrous Metals, Sheet Metals, Sintered Iron, Steel & Plastics 30mm Working Length High-Speed Steel Tip High-Speed Steel 1/4" Hex Shank Suitable for Cast Iron, Cast Steel, Non-Ferrous Metals, Sheet Metals, Sintered Iron, Steel & Plastics 30mm Working Length High-Speed Steel Tip