Product Description
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:
- Self Starting Stepped Drill Bits (4-20mm , 9 hole)
- Self Starting Stepped Drill Bits (6-30mm 13 hole)