Hole-saw drill bits are designed to bore holes in hard concrete materials.
- 6 cemented carbide drill bits made of YG11C tungsten carbide, profiled and installed at an angle that enhances the efficiency of boring;
- body of the hole-saw drill bit made of high-quality CrV40 alloy steel;
- profiled body that enhances the efficiency of evacuating bore dust during drilling;
- additional enlarged diameters of 67mm and 83mm facilitate further installation of boxes in walls;
- handy plastic tube makes storage a lot more convenient.