IRWIN WeldTec 2 in Woodboring Drill Bit Sanders polishers perfect along the short wall perfect along the short wall of the tub or shower or vertically for getting in and out of the tub 1 1 4 in bar diameter for better grip and a slimmer look Hides screws on the mounting flange with a snap over cover Can be installed with a grab bar wall anchor (sold separately With two speed ranges of 300 and 100 RPM for greater versatility and a 7 true holes 7 16 In hex impact shank reduces slipping in standard chucks and is compatible with all 7 16 in impact wrench chucks Series Name WeldTec Sub Brand N A Bit Type Self feed bit Bit Length 5 in Shank Size 7 16 in Shank Type Hex Material High speed steel Case Type N A (no case) Quick Change No For Use With Power tool For Use on Metal No For Use on Wood Yes Warranty None Set Individual Individual Package Quantity 1 CA Residents: Prop 65 Warning(s) Yes Brand Model Compatibility All Bit Diameter (Inches) 2 in