Premium 12-Piece Polished Drill Bit Set - 0.314 Inch High-Speed Steel Bits for Metal, Wood & Plastic - Perfect for DIY Projects, Home Repairs & Professional Use

Water-feed adapters turn a drill into a water-fed tool for wet drilling and polishing hard or abrasive materials such as stone, ceramic, tile, and glass. They connect to the drill chuck and to a water source to deliver water to the nose of the drill. WARNING: Cancer and Reproductive Harm -