915 Generation 130mm/5Inch Diamond Drill Bits for Glass Ceramic Porcelain T

Quality : These diamond drill bits are made of high 45 steel which is high quality and durable. With a -plated coated body to resist corrosion, which has a long service life. chip holes to that when punching , punching accurate.
Smoothly Cutting: A thicken diamond dust coating on tops offers superior cutting strength for creates a high precision, cut with no broken edges. Reduced drill speeds, low drill pressure, and increased use of water lubrication will extend drill bit life considerably.
Multiple Applications: The diamond drill bit can remove a complete 130mm diameter hole on glass, tiles, granite, ceramic. In addition to cutting holes for glass, the comes in for tile bottles, blocks jars, fiberglass, porcelain tile, ceramic, , , light stone. Not for use on Concrete or for depths beyond about 1/2inch. Specification:
Finish: -plated
Colour:Silver
Material:Diamond+45 steel
Size:130mm Package Contents:
1* diamond drill bit
How to Use:
1. Put glass drill into driller.
2. Because this cannot locate center, so cutting with it slowly with 45 degrees.
3. cut a small first to locate center, then you can cut material vertically.
4. The speed needs to be controlled, not too fast and water is required during cutting.
Attention
1. When you using diamond drill bits, use lubrication (water). Otherwise, the diamond core drill will burn.
2. do not cut metal material with this tool.
3. Not for use on Concrete or for depths beyond about 1/2inch.
4. keep speed within 800-1000 per , low drill pressure, and increased use of water lubrication will extend drill bit life. Only above package content, other are not included.
Note: Light and different displays may cause color of item in a little different from real . The measurement allowed error is +/- 1-3cm.