Southwire 4 Piece 3 4 in Woodboring Auger Drill Bit Cordless String Trimmer Ideal for mowing slight rolling Q Can I use Ideal for mowing slight rolling hills and several obstacles from 4 to 12 acres GTS1031: optional Series Name N A Sub Brand N A Bit Type Auger bit Bit Length 18 in Shank Size 7 16 in Shank Type Hex Material High speed steel Case Type Hard Quick Change No For Use With Power tool For Use on Metal No For Use on Wood Yes Warranty Lifetime Set Individual Individual Package Quantity 4 CA Residents: Prop 65 Warning(s) No Brand Model Compatibility Southwire Bit Diameter (Inches) 3 4 in Screw tip draws bit through wood Polished and coated flutes increase removal of cutting material