Plasplugs, 5/8" Cool Cut Tile Drill System, For Drilling 5/8" Holes Perfectly Through Any Floor Tile Type Ceramic, Porcelain, Granite, Marble, Natural Stone, Etc, Perfect For Bathroom Accessories, Towel Rings, Robe Hooks, Paper Holders, Etc, Long Life Resilient Diamond Tipped Hollow Core Drill, Patented Water Cooling System With Press Button Feed, Unique Self Adhesive Drill Guide For Precise Clean Cut Drilling.