Southwire 4 Piece 7 8 in Woodboring Ship Auger Drill Bit Laminate Wood Plank (1) DCB203 XR 2 (1) DCB203 XR 2 it is designed for both DIY enthusiasts and professional contractors Series Name N A Sub Brand N A Bit Type Ship 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) 7 8 in Screw tip draws bit through wood Polished and coated flutes increase removal of cutting material