1-1/8 In. -12 Carbon Steel Bottoming Hand Tap (1-Piece) Hand threading tap is the most versatile taps for hand use or for tapping under power Hand threading tap is popular for use in general machine tapping or CNC tapping Also appropriate for tapping the vast majority of materials in through or blind holed conditions 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, set: contains taper, plug and bottom taps Taps are for making new threads or re-threading inside a hole Carbon steel taps are for re-threading or cleaning up threads. For hand use or for tapping under power Bottom taps generate the thread to the bottom of the hole