IDEAL Nailbiter 7 8 in Woodboring Ship Auger Drill Bit Sheet Metal Tools brick and soft concrete brick and soft concrete E 01666 Precision machined tips provide a superior full contact fit for improved holding power and longer life Series Name Nailbiter 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 Yes For Use With Power tool Hand brace For Use on Metal No For Use on Wood Yes Warranty 90 day limited Set Individual Individual Package Quantity 1 CA Residents: Prop 65 Warning(s) No Brand Model Compatibility N A Bit Diameter (Inches) 7 8 in even through nail embedded lumber Dual induction heat treated ensures durability staying sharper longer Heavy duty lead screw designed for quick gripping and penetration power Resharpen for extended tool life Tempered high speed steel construction 7 16 In hex shank Drills through nails