Glass and Tile Hollow Core Drill Bits

Descriptions: You may need one of these Glass and Tile Hollow Core Drill Bits Extractor Remover Tool and Hole Saws for glass, ceramics, porcelain, ceramic tile Hole saw / core drill style bits, Pack of 10 10 Sizes: 6mm, 8mm, 10mm, 14mm, 16mm, 18mm, 22mm, 35mm. 40mm, 50mm Application: Drill Glass, Tile Bottles, Blocks Jars, Fiberglass Porcelain Tile Ceramic, Slate Mable, Granite Light Stone SPEED KILLS: Reduced drill speeds, low drill pressure and increased use of water lubrication will extend drill bit life considerably Warnings: Not for use on Concrete or for depths beyond about 1/2"; Water is required for lubrication when drilling Standard form & Use note Start your hole diagonally, make a round trace and then hold drill straight Always use lubrication (water), otherwise the diamond core drill will burn Low drill pressure and increased use of water lubrication will extend drill bit life considerably Not for use on Concrete or for depths beyond about 1/2