Union Butterfield 1700(M) High-Speed Steel Hand Tap, Uncoated (Bright) Finish, Round Shank With Square End, Taper Chamfer, M7-1.00 Thread Size Hand threading tap with straight flutes cuts threads in through holes and blind holes Produces ANSI standard right-hand threads in metric sizes High-speed steel is compatible with a variety of materials Uncoated (bright) tools have no additional surface treatment or coating, for use on a broad range of materials Round shank with square end allows tap to be used in hand or power-driven applications