Diamond Core Drill Bit Set - FOCSTOL 11pcs Diamond Hole Saw Kit for Porcelain Tile Ceramic Marble Granite (6/6/8/20/35/50/65mm+20mm Finger Milling Bit

Diamond Core Drill Bit Set - FOCSTOL 11pcs Diamond Hole Saw Kit for Porcelain Tile Ceramic Marble Granite (6/6/8/20/35/50/65mm+20mm Finger Milling Bit

Package Include-----Total 11pcs/set: 7pcs core drill bits 1/4''(6mm), 5/16''(8mm), 4/5''(20mm), 1-3/8''(35mm), 2''(50mm), 2-1/2''(65mm); 1pc 4/5''(20mm) finger milling bit; 1pc 2''(50mm) beveling chamfer bit; 1pc hex adapter; 1pc 4.5''(115mm) tile saw blade Application-----Suitable for dry/wet drilling Porcelain Ceramic Tile Marble Granite Artificial Stone Quartz, etc. Diamond core drill bits for drilling holes. Beveling chamfer bit and finger milling bit for shape, enlarge and round bevel existing holes. Hex adapter could change the connection of diamond bits. Saw blade suitable for cutting and grinding of porcelain tiles, etc High-quality Diamond-----High-quality base steel, high-quality diamond provides to improve the efficiency of hole drilling Vacuum Brazed Technology-----Vacuum brazed technology provides higher processing efficiency and longer working life. Dry or Wet use. Wet using will prolong the working life and get better drilling effect Recommended Machine-----5/8''-11 Thread Angle Grinder. Recommended speed 6000RPM, maximum speed 11000RPM. If you want to use electric drill or other machine, you can use hex adapter in the package. (Use electric drill: Before starting drilling, please confirm your drill's RPM, at least over 2000RPM. Faster the RPM, longer the drill bit's working life)