HELI-COIL Screw Thread Insert STI Tap: 1-1/8″-7 Thread Size, 3 in Thread Lg, 6 1/16 in Overall LgHigh-speed steel STI taps provide good wear resistance in general purpose tapping applications in a range of materials. These taps have a bright finish that provides a smooth, polished surface.

Heli-Coil Screw Thread Insert STI Tap: 1-1/8″-12 Thread Size, 2 9/16 in Thread.