IRWIN WeldTec 7 8 in Woodboring Auger Drill Bit Scroll Saw The M18 REDLITHIUM Battery Packs The M18 REDLITHIUM Battery Packs (not included) deliver more work per charge and more work over the life of the packs than competitors ) 96 Coverage Area (sq Series Name N A Sub Brand WeldTec Bit Type Auger bit Bit Length 17 in Shank Size 7 16 in Shank Type Hex Material High speed steel Case Type N A (no case) Quick Change Yes 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 Bit Diameter (Inches) 7 8 in Brand Model Compatibility All Aggressive screw pitch Patent pending welded cutting edge Wide flutes 7 16 In quick change impact shank Fully forged body on bits 3 4 in diameter and larger