Irwin, 7/8" LONG SHANK WOOD BORE BIT

Irwin, 3/8" LONG SHANK ELECTRIC DRILL WOOD BIT

Irwin Wood Boring Bit, Size: 7/8" x 6" Woodboring bit

Irwin Wood Boring Bit Extension, 11/16" WOOD BORING BIT SPEEDBOR

Irwin Wood Boring Bit, Size: 5/8" x 6" Woodboring bit

DeWalt Spade Bit, 7/8" x 16" Wood Boring Bit