Drill America 5 Piece Tungsten Carbide 1 4 in Cutting Bit Accessory Power Equipment Generators Gasoline Dual LED lights help illuminate Dual LED lights help illuminate the work surface Variable speed dial allows the user to match speed of of the router to the application Depth adjustment ring allows for fast and easy height adjustments Soft start motor with full time electronic feedback allows the motor to maintain speed during cuts Electronic brake slows the motor down faster after the unit is shut off carrying bag and dust bag 20V MAX 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 shank allow use with a wide variety of tool holding systems Ball shape