Product Name:
2 pieces 12mm Vacuum Brazed diamond drill bits(1/4" Quick Change Hex Shank)

Specification:
Diameter 12mm, Hexagon Shank, diamond length 10mm, drilling depth 30mm,total length 80mm

Quantity:
2 Pieces 10mm

Application:
Dry/Wet Drilling porcelain tile, marble, stone, granite, Masonry, brick...

Feature:
1. Wax inside for cooling, Dry drilling without water
2. Very high efficiency, multi-purpose drilling
3. Vacuum Brazed technology and high quality diamond grains provide high efficient working and long time performance

Notice
Ensure all the forms of percussion or hammer action are turned off.
Applying excessive pressure will not make the bit drill faster but will create excessive heat and subsecuently reduce the efficiency and life time
Use a suction cup guide to enable an accurately positioned hole, Alternatively place the drill at a 45 degree angle. Drill until the drill bit starts to penetrate the material and then bring the drill up into the upright position and continue