9BA HSS Taper Hand Tap Sutton 6450720 The hollow punches can be

The hollow punches can be locked on the chuck easily thanks to the spur system and can be paired to cut a ring in a single operation with a concentric cutting

Bell Precision Key Steel (S45C) 3/4" x 3/4" x 12" (KS524)

koken - 1/4"dr ratchet - 125mm

Firmly locked or loosely attached for sliding or pivoting

9BA HSS Taper Hand Tap Sutton 6450720 The hollow punches can beFor producing precision threads by hand tapping, for starting threads either second or bottoming taps should used after to achieve desire thread depth. General purpose use Suitable for materials up to 1000N mm2 Through & blind holes Suitable for both hand and machine operations Pitch 0. 39 Overall length 45mm Cutting length 10mm Drill diameter 1. 55mm