IDEAL Nailbiter 1 in Woodboring Ship Auger Drill Bit Cali Vinyl chair rails and other trim Grey Vanity chair rails and other trim projects 42 PEI Rating IV (High Resistance to Abrasion) Break Strength 325 lb Shade Variation V0 No Variation Shower Floor Compatibility Compatible Style Farmhouse 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 No For Use With Power tool 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 Bit Diameter (Inches) 1 in Brand Model Compatibility N A Nailbiter premium dual helix construction Twin cutting edges for fast and smooth drilling