Carbon Steel Hand Taps are used to re-thread damaged and/or jammed threads. Carbon Steel Hand Taps may also be used to thread mild steels. Taper Style: Starts the thread square with the workpiece. Plug Style: Generally used in thru holes. Bottom Style: Generate the thread to the bottom of the hole. Carbon Steel Hand Tap, Set includes Taper, Plug and Bottoming Taps, 1″-8, Number of Flutes 4, Dec Equivilant 1-8