Mgtgbao 10pc 5MM Masonry Drill Bits +10pc 3/16 5MM Diamond Drill Bits
- HIGH-QUALITY MATERIALS:It is made of high quality YG6X alloy as raw material. The process of oxynitriding of the cutter head strengthen the drill hardness..
- SURFACE ELECTROPHORETIC PAINT PROCESS: Full-grinding and anti-rust treatment, clean and sharp without burrs .The drill bit is more wear-resistant and more durable .Fully automated polishing: Polished CNC is fully automated, each one is unified..
- NEW DESIGN: U-shaped drain groove, spiral handle design, easy to remove chips during work, smoother drilling. 10 pcs drill bit set with 5mm (3/16”) sizes: that is 10 x 5mm (3/16”) fit your different needs..
- 10pc - 3/16” (5mm) Dry diamond drill bits with hex shank. Diameter 3/16” total length 65mm.
- Self Cooling -- Diamond tipped drill bit are integrated with wax. The wax melts while drilling absorbing and dissipating heat allowing for Dry drilling (water may be added for longer life and harder stones)..