Qualtech straight flute hand tap, series: DWT, measurement system: imperial, 7/8-14 thread, plug chamfer, 4 flutes, HSS, bright, right hand cutting direction, H4 thread limit. Qualtech DWT54891 Straight Flute Hand Tap, Right Hand Cutting, 7/8-14 Thread, H4 Thread Limit, Plug Chamfer, 4 Flutes, Bright, HSS