Drill America DWTS1-1/2-12 1-1/2"-12 Carbon Steel Tap Set, DWTS1-1/2-12Drill America DWTS1 1 2 12 1 1 2" 12 Carbon Steel Tap Set, DWTS1 1 2 12 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 Taps are used to re thread damaged and or jammed threads. Carbon