FOCSTOL Diamond Drill Bits Set 10pcs, 3/16''-3/8'' Tile Drill Bit for Drilling Holes in Porcelain Ceramic Tile Marble Granite Glass, Drill Bits with 1

FOCSTOL Diamond Drill Bits Set 10pcs, 3/16''-3/8'' Tile Drill Bit for Drilling Holes in Porcelain Ceramic Tile Marble Granite Glass, Drill Bits with 1

Package Include-----Total 10pcs/set: 8pcs drill bits: 3/16''(5mm), 1/4''(6mm), 5/16''(8mm), 3/8''(10mm); 2pcs ph2 drill bits; 1/4'' quick change hex shank Application-----Suitable for dry or wet drilling in Porcelain Ceramic Tile Glass Wood Plastic Masonry Marble Granite Artificial Stone Quartz, etc. Wet using will prolong the working life. Quick change hex shank design for stable clamping, smooth and easy drilling Cooling Wax and High Quality Diamond-----The inside of the drill is filled with cooling wax to help dissipate heat and chips. Premium diamond particles and vacuum brazing technology allow for faster, more efficient drilling and longer working life PH2 Drill Bit-----Installed on the hand drill used to screw the screwdriver head of the Phillips screws, strong adsorption, not easy to fall, you can easily start screwing screws, but also not easy to rust, wear-resistant and durable, so that the work more efficient 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