7/16" Diamond Core Drill Bit For Glass and Tile | Put 2 in You Cart, Get the Third FREE | FREE Beginner's Glass Drilling Guide | FREE Decorating Idea Guide | 100% Guartantee 7/16" Diamond Core Bit for Glass and Tile; Fits your hand drill or drill press FREE 4 page drilling instruction guide. FREE 5 page decorating ideas guide FREE shipping in the US. No risk - 100% money back guarantee EASY - Use your kitchen scrubbing sponge to hold the glass and cool the bit. Well show you how Youll make wine bottle lamps, lighted glass block, bird feeders and more