Drill America 5 Piece Tungsten Carbide 1 4 in Cutting Bit Accessory Variable Speed Rotary Tool 97 lb Texture Surface Smooth Underlayment Due to the nature 97 lb Texture Surface Smooth Underlayment Options Underlayment Not Required Water Protection Waterproof Width Type Fixed Wood Grade Common Manufacturer Warranty Limited Life Time Residential Warranty Product Length (in Complementing these two is the matching finish pop up drain Sub Brand Drill America CA Residents: Prop 65 Warning(s) Yes For Use on Glass No For Use on Wood Yes Warranty None For Use on Ceramic No Total Number of Pieces 5 For Use on Concrete No For Use on Grout No Material Tungsten carbide Set Individual Individual For Use on Metal Yes Diameter Measurement 1 4 in For Use on Drywall No Type Bur For Use on Plastic Yes Application Cutting stainless steel and metals Double cut style for rapid material removal in tough applications Solid carbide tooling provide long life and faster cutting speeds Round 1 4 in