Dormer E201 Cobalt Steel Machine Straight Flute Threading Tap, Nitride Finish, Round with Square End Shank, Modified Bottoming Chamfer, M6-1.00mm Thread Size, 6.0mm Shank Diameter (Pack of 1) Hand threading tap with straight flutes cuts threads in through holes and blind holes Nitride finish provides hardness for wear resistance and is suitable for abrasive materials such as cast iron Cobalt steel resists abrasion and high temperatures, with higher feed rates compared to high-speed steel Produces right-hand threads in metric sizes Round shank with square end allows tap to be used in hand or power-driven applications