[Package includes]10 Pieces of Dry Diamond Core Drill Bits Kit for drilling holes diameter of 5/16 inch(8mm) and 3/18 inch(10mm), Sufficient quantity to meet your needs
[Apply to]Great for drilling clean holes to hard materials especially tiles, porcelain ground, granite ceramic glass mirror marble stone masonry brick, Note: not for wood
[Dry Drilling Design]Diamond Drill Bit made with wax lubricant inside, which can melt while dry drilling and cool the cutting surface; Water can be used as additional cooling to prolong the life of the bit
[Wide compatibility]Diamond coating enhances the drilling speed; Round Shank compatible with most machines such as Hand Drill, Angle Grinder, Bench Drill; Depth mark is also useful for precise project
Shank Type:Round Shank
Steps to drill clean and precise holes:
1. Place the drill at a 45 degree angle, so the drill has the chance to start and will prevent the drill slipping
2. Slowly move the drill bit into a more up-right position and Continue to drill and swaying the machine along a circle
3. You don`t need to apply too much pressure to let the drill finish the work. Once the drilling is completed, you will feel the drill break through the back of glass or ceramic tile
4. Be careful when using, because if you use it too fast, it may burn a little glaze and burn out
size:65mm long
Material:diamond coating
colour:Blue
Package Contents:
5 * Bits diameter of 5/16 inch(8mm)
5 * Bits diameter of 3/8 inch(10mm)
Only the above package content, other products are not included.
Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.