IDEAL 7 16 in. x 18 in. Ship Auger Extension Woodboring Auger Drill Bit Cabinet Backplates making it the ultimate choice '304869786 making it the ultimate choice for busy households or commercial spaces hardware included Compatable with IDEAL Nailbiter and Resi Master auger bits and other 7 16 in hex shank auger bits Adds 18 inches to regular bit length Six flats on shank Heavy duty double set screw type Dual locking hex screws Allen wrench included Quick change shank design Full black oxide coating prevents rust Full body ship auger extension Bit Type 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 Bit Diameter (Inches) 7 16 in Brand Model Compatibility N A