* High Quality Carbon Steel Threading hand taps for re-threading damaged and/or jammed threads * Can Also Be Used To Thread Mild Steel * Set of 3 Pcs Taper, Plug and Bottom - Taper Tap starts the thread square with the workpiece. Plug Tap is generally used in thru holes. Bottom Tap is used at last to generate the thread to the bottom of the hole. * Straight flute tools allow chips to collect in the flutes as they cut and are well suited for most applications in shallow cuts * Uncoated tools feature just the base substrate without any additional treatment or coatings and are suitable for a wide range of applications