IDEAL Nailbiter 7 8 in Woodboring Ship Auger Drill Bit Industrial Equipment It is recommended to purchase A Modern Statement with It is recommended to purchase 6% overage to account for cuts and waste Porter Cable Series Name Nailbiter Sub Brand N A Bit Type Ship auger bit Bit Length 7 1 2 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 Nailbiter™ premium dual helix construction Twin cutting edges for fast and smooth drilling