Professional Diamond Hole Saw: With special brazed diamond design for porcelain, glass, marble, ceramic, rock and granite, etc. High Quality Hole Drilling: Made from carbon steel with diamond blade, ideal for drilling clean and precise holes and cutting perfect circles with these tools Long Life: Heavy duty hole saws provide superior performance, durability over 8 times Tips: Electroplated diamond coating will wear off if the tool gets too hot. Never let your drill bit run dry Package Contents: 6mm, 8mm, 10mm, 12mm, 16mm, 20mm, 22mm, 25mm, 30mm, 38mm, 50mm. 11pcs Drill Bit Set Product Description Specifications: Material: Carbon Steel 11pcs 6mm-50mm Diamond Hole Saw Drill Bit Set Features: This diamond coated core drill bit removes a complete circle from glass, tiles, marble, granite, ceramic or other materials Note: If you feel the burn, back off! Either your speed is too high or the pressure you are applying is too much. It should never be hot to the touch, not even warm. Please:
