IDEAL Nailbiter 3 4 in Woodboring Ship Auger Drill Bit Wood Flooring Each 18 volt lithium ion battery Each 18 volt lithium ion battery is laden with new age REDLINK circuitry engineered to prevent overloads and protect against cell damaging discharge Designed to perform 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 Re sharp enable for extended tool life 7 16 In hex shank length 18 in Quick change shank design Full black oxide coating prevents rust Series Name N A Sub Brand Nailbiter 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 For Use on Metal No For Use on Wood Yes Warranty 1 year limited Set Individual Individual Package Quantity 1 Bit Diameter (Inches) 3 4 in CA Residents: Prop 65 Warning(s) No Brand Model Compatibility N A