Driak HSS4241 6-60mm/0.23"-2.36" Metric Spiral Groove Step Drill Bit Set 13mm/0.51" Shank Cone Drill Bit Hole Cutter for Wood Stainless Steel Cutting
- Metric HSS-4241 Spiral Groove 6mm - 60mm/0.23"-2.36" Step Cone Drill Bit Hole Cutter 13mm/0.51" Shank.
- Suit for use in hardness under 25 artifacts(Such as iron, steel, PVC panels, wood board ,Do not fit for cutting Stainless steel ) , The plate thickness under 5mm.
- it can not easily be broken.It can deburr, chamfer and open hole, but ordinary twist drill can't.
- Unique ladder structure , it can open multiple Aperture.