Recoil if you have trouble with damage or insufficient strength of female threads. With the new "Trade Series" lineup, it comes with a drill for punching. In addition, the insert insert tool can be changed into a simple tap handle. The folding tool has a magnet that prevents the tongue from being lost. Insert (1.5D) contains 15 pieces of large play. In other words, this kit and electric drill will complete the repair! Make sure to have one in your tool box! Kit Contents: Drill for drilling x 1, Insert tool (with simple tap handle) x 1, Folding tool (with magnet for tongue) x 1, Recoil tap (#2) x 1, Recoil insert (1.5D) x 15