Product Name:
5 Pieces/box 1/4-Inch quick Hex Shank Diamond Drill Bits Set(6/8/10/12/14mm)

Specification:
1/4" Quick hex Shank, diamond length 10mm, total length: 65(6mm), 80mm(8mm and above)

Quantity:
5 pieces diffrernt size(6/8/10/12/14)

Application:
For drilling granite & marble, masonry, concrete, tile/ceramic, hard plastic.....

Feature:
1. Wax inside for cooling, Dry drilling without water
2. Applying excessive pressure will not make the bit drill faster but will create excessive heat and subsecuently reduce the efficiency and life time
3. Very high efficiency, multi-purpose drilling
4. Vacuum Brazed technology improve high quality and Long life drilling
5. When drilling, the wax will melt to lubricate and cool the drilling surface
6. 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