BGTEC Diamond Drill Bits Set Core Drill bit with Quick Change Hex Shank, 5pcs 1/4"*4 Tile Drill Bit+1/4" Carbide Drill Bit for Ceramic Tile Porcelain

BGTEC Diamond Drill Bits Set Core Drill bit with Quick Change Hex Shank, 5pcs 1/4"*4 Tile Drill Bit+1/4" Carbide Drill Bit for Ceramic Tile Porcelain

6MM*4 quick shank dry drill bit with double lugs+6MM cross twist carbide drill bit.Total length 65mm with twist flutes.Suitable machines: Hand drill, Bench drill Dual-ear quick-release handle design: 6.35 mm diameter on the opposite side of the handle; less resistance during use. The top of the drill bit with spiral grooves: 8MM diamond high, spiral grooves help to drain and prevent flying chips from clogging, improve drilling efficiency; The drill bits contain cooling wax: they can be drilled dry without water, which is more convenient and at the same time reduces the environmental impact; Advanced vacuum brazing technology: offers a longer service life than electroplating (usually 3 to 5 times). Wet or dry; 2. Ensure that all forms of impact or hammering action are turned off. 3. Use the suction cup locator to accurately position the hole or place the drill at a 45 degree angle to drill until the drill begins to penetrate the material, then raise the drill to a vertical position and continue;