Material: diamond powder / bronze / 45 # steel
Diameter: 4mm - 50mm
Shank Type: Conical Shank
Shank Diameter: 9mm - 13mm
Total Length: 67mm
Maximum cutting depth: 45mm
Features:
1: Made of high-quality diamond powder sintered, durable and good quality
2: The opening shall be neat, smooth, without broken edges, and will not produce tremor
3: Small incision resistance, fast opening speed, and easy chip removal
Application: used for opening glass, ceramic tile, marble, granite, ceramic, quartz stone ect hard and brittle materials. It can also be used for woodworking Buddha beads DIY.
Note:
1: During drilling, the speed of the electric drill should be slow and must to add water to cool