Dry Diamond Drill Bits Set - FOCSTOL 10pcs 8mm Diamond Hole Saw Kit with Round Shank for Ceramic Porcelain Tile Marble Granite

Dry Diamond Drill Bits Set - FOCSTOL 10pcs 8mm Diamond Hole Saw Kit with Round Shank for Ceramic Porcelain Tile Marble Granite

• 【Size】Totally 5pcs/set: Diameter 5/16''(8mm); Total length 65mm; Diamond height 8mm; Diamond Grit #50/60
• 【Application】Suitable for dry or wet drilling in Porcelain Ceramic Tile Marble Granite Artificial Stone Quartz, etc. Wet using will prolong the working life. Round shank design for stable clamping, smooth and easy drilling
• 【Cooling Wax】The inside of drill bits are filled with cooling wax, help heat dissipation and chip evacuation. Dry drilling without water, very convenient
• 【Vacuum Brazed Technology】Vacuum Brazed Technology and high quality diamond grains provides fast and smooth drilling, longer working life
• 【Recommended Machine】Corded Drill, Cordless Drill, Benchtop Drill. Use electric hand drill: Recommended speed not less than 2000RPM; Faster the RPM, longer the drill bit's working life. When use Angle Grinder, please install angle grinder drill chuck