Sutton Tools Carbon Hand Taps are ideal for routine maintenance, repair work and for rethreading where high accuracy and tolerance thread is not critical. - Straight Flutes suitable for through hole tapping up to 1-1/2 x diameter - Taper lead: for starting a thread prior to using a intermediate or bottoming lead tap - Square shank for use with a suitable tap wrench to drive the tap - Made from tungsten chrome alloy - Bright finish for general purpose applications, non-ferrous metals & plastics