4-13MM DIAMOND DRILL BIT TILE GLASS HOLE SAW CORE BIT GUIDE WITH VACUUM BASE Designed to drill glass, ceramic tiles, marble and slate Diamond. Great for those Hard to Reach Awkward Areas like. Drilling horizontally in tiled wall or vertically in floors is much easier with this guide. Larger size is available in our shop Attaches to most tiled surfaces by means of its lever operated vacuum base.