When renovating your kitchen or bathroom wallsor fastening mirrors in bathroom or installing shower, you will need to drillholes on mirrors or tiles without cracking them, hence you will need to usethese diamond drill bits to make those holes very precise
Our porcelain diamond core drill bit uses vacuum brazed technology, so the bit can be usedat a higher temperature cutting harder materials, great for drilling clean holes to granite, ceramic, glass stone brick andmarble tile stone Jars and similar materials (not for wood)
Dry diamond drill bit integrates wax lubricant inside of the bit. During drilling,this integrated lubricant will melt to cool the cutting surface, perfectfor project which lubricant is not applicable. If additional cooling isrequired, water can be used to prolong the life of the bit and to remove thedebris during the drilling process.
Steps to drill clean and precise holes：
1. Start Drilling the hole in anangle about 45 degrees to the surface, so the drill has the chance to start andwill prevent the drill slipping
2. Slowly move the drill bit intoa more up-right position and wobble the drill bit in the circular motion
3. Do not need to apply much pressure,let the drill bit do the work, you will feel the drill bit break through theback of the glass or tile once the hole is completed
4. Take care when using them as abit can glaze and burn out if use too fast
Package includes：
2 x Bits diameter of 1/4 inch(6mm),
1 x Bit diameter of 5/16inch (8mm)
1 x Bit diameter of 3/8inch (10mm),
1 x Bit diameter of 1/2inch (12mm)
1 x Storage case