10Pcs 3-50mm Diamond Tool Drill Bit Hole Saw Cutter Glass For Tile Marble Glass

Made of high quality metal material, very durable 10 different diameters, perfectly meet you need. Suitable for use in drill hole on glass, marble, tile or granite Opening neat, smooth, no broken edges, will not produce tremor. Needs water for lubrication, otherwise the diamond core drill will burn Can be used with a standard electric drill Start your hole diagonally, make a round trace and then hold drill straight