Diamond Saw Hole Set Drill Bit 3-42mm Marble Glass Cutter Round Craft Bottle Cut hown-store 15pcs diamond hole saw drill bit set 3mm-42mm for tile ceramic glass porcelain marble. Works better with an electric drill, cut holes in marble, slate, glass, tile, stone, Can drill a completely clean and accurate hole from a hard surface, no broken edges, and no tremor phenomenon, long service life. Specifications: Measurement unit : mm / inch Product: Diamond Saw Hole Type: Hole Saw Material: Steel (HS) Suiface treatment: Nickel plated Bit coated: Diamond coated Length: 50mm / 2" Dia. size: 3mm / 0.12", 4mm / 5/32" 5mm / 13/64" 6mm / 15/64" 8mm / 5/16" 10mm / 25/64" 12mm / 15/32" 14mm / 35/64" 16mm / 5/8" 18mm / 45/64" 20mm / 25/32" 22mm / 55/64" 25mm / 63/64" 26mm / 1-1/32" 42mm / 1 21/32" Features: Excellent for making a clean and accurate hole on glass and tile. Can be used with a standard electric drill. These diamond bits are capable of drilling into extremely hard materials such as stone and glass. Use a low-speed setting and proper cooling, such as water, to ensure long lasting life. Note: Always use lubrication, otherwise, the diamond core drill will burn. Use a low-speed setting and proper cooling with water, to Ensure Longer Lasting Life Start your hole diagonally, make a round trace and then hold drill straight. Package Included: 15pcs x Diamond Saw Hole Set Drill Bit 3-42mm Marble Glass Cutter Round Craft Bottle Cut #Diamond #Saw #Hole #Set #Drill #Bit #Marble #Glass #Cutter #Round #Craft #Bottle #Cut #hown_store