Drill America 12 Piece Tungsten Carbide Set Cutting Bit Accessory Kit Drywall & Masonry polished chrome alloy steel 1000993234 polished chrome alloy steel Pulls cool air into the attic from your other vents while blowing the hot air in your attic out Sub Brand Drill America CA Residents: Prop 65 Warning(s) Yes Diameter Measurement Set For Use on Glass No For Use on Wood Yes Warranty None For Use on Ceramic No For Use on Concrete No For Use on Grout No Material Tungsten carbide Set Individual Set Total Number of Pieces 12 For Use on Metal Yes For Use on Drywall No Type Bur For Use on Plastic Yes Application Cutting Carbide Burr Set include: SA1