This diamond twist drill cleans out better than regular diamond drills. They’re great for stone, glass and plated material. Recommended speed: 5,000-10,000rpm. these will cut through virtually anything – glass, wallboard, hardboard and soft metals. Because of the diamond coating, these will not cut a precisely sized hole but are perfect for jobs when you have any concern about whether the material is abrasive or not (abrasive materials will even destroy even a solid HSS bit).
- High Quality Diamond Coated Drill Bits 10 pieces – Wet Type (water to be used during drilling)
- Great for making holes for jewelry, including earrings, beads, and pendants
- Great for drilling holes in glass, stone, tile, and more
- Used by Jewelry Designers for drilling clean holes on Beach Sea Glass, Sea Shells, Rocks, Marbles, Stones, etc
- Diameter of head: 0.75mm, 1.25mm, 1.5mm, 1.75mm, 2mm, 2.5mm, 3mm, 3.5mm, 4mm, 4.5mm, 5mm, 5.5mm, 6mm,