3 x Spear Point Tile Drill Bits 1/8 inch (3mm) High Quality Tungsten Carbide Spear Point Tile Glass Drills *****Free Pro Tips below***** You will Not Find Better Quality we 100% Guarantee it. These Drills are a lot better quality than you will find in the big box hardware stores, if you can find them, these Glass Bits are the same Tile Drill Bits we use in our demonstrations across the country and they cut better and last longer than any other Spear Point Tile and Glass drills, We have tested Them All. The special shaped head allows slow drilling of holes in Glass, mirrors and low to medium density ceramic tiles. The Tip is specially designed with a double point this allows for a non slip start when drilling these difficult to cut materials. Sizes available 1/8" (3mm), 5/32" (4mm), 13/64" (5mm), 1/4" (6mm), 5/16" (8mm), 3/8" (10mm), 1/2" (12mm), 5/8" (16mm) Pro Tips: #1. Drill a few holes in wall tile first to remove Silver Paint, they will cut beter once it flakes off a bit. #2. Use slow drilling speeds under 500 rpm. #3. For best results in Glass Use in one of our Drill Stands #4. If Drilling Dense materials like floor tiles or glass build a putty wall around area to be drilled and create a reservoir of either turpentine or water, this will act as a coolant and not only aid the drilling and finish, it will also increase the lifespan of the drill bits by preventing them from overheating. ********Buy with Confidence ******** All Our Products are Guaranteed Who uses our Tile Glass Drills? Professionals DIY and Remodellers, Tile Installers, Glaziers, Construction Workers, Engineers, Plumbers, Electricians, Air Conditioning Engineers, Kitchen Fitters, Masons, Security engineers, Composite Manufacturers and users such as Fiberglass Boat Builders and Auto Body Kit Manufacturers, Component testers, Aerospace Industry, Graphite Industry,Insulation manufacturers, Woodworking.. These Drills are brand new Guaranteed and continuously available, we sell thousands wholesale that's how we can offer this Quality at Regular Prices direct to the public.