Add to Cart Compare IRWIN Irwin Self-feed Wood Bits, 18 in Hex Key Extension (1 EA / EA) MSRP: Now: $28.22 Was: For drilling large diameter holes in wood for pipe, conduit and other applicationsReplaceable coarse screw point drills quickly in dry, wet, and gummy woodAll bits have a 7/16 in. hex quick change impact shank that fits 1/2" or larger electric drills or... 585-3046003 Add to Cart Compare MSRP: Now: $28.22 Was: Add to Cart Compare Qty in Cart: 0 Quantity: Decrease Quantity: Increase Quantity: Price: MSRP: Now: $28.22 Was: Subtotal: Add to Cart