Without needing a centre punch or pilot hole, these drill bits will provide true round, parallel-sided, holes in thin material; metal, wood or plastic.
Better than conventional twist drills which vibrate and produce triangular holes, or tapered drills which produce tapered sides.
2 sizes available:
- This one is Self Starting Stepped Drill Bits (4-20mm , 9 hole)
- We also have Self Starting Stepped Drill Bits (6-30mm 13 hole)
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