IRWIN WeldTec 7 8 in Woodboring Auger Drill Bit Cordless Combo Kits sub‑base plates Anti Rust Paint sub‑base plates Single Sleeve Ratcheting Chuck – Locking mechanism securely holds bits during high torque applications Aggressive screw pitch Patent pending welded cutting edge Wide flutes 7 16 In quick change impact shank Fully forged body on bits 3 4 in diameter and larger Series Name N A Sub Brand WeldTec Bit Type Auger bit Bit Length 17 in Shank Size 7 16 in Shank Type Hex Material High speed steel Case Type N A (no case) Quick Change Yes For Use With Power tool For Use on Metal No For Use on Wood Yes Warranty None Set Individual Individual Package Quantity 1 CA Residents: Prop 65 Warning(s) Yes Bit Diameter (Inches) 7 8 in Brand Model Compatibility All