Irwin - Speedbor 3/4 in. X 6 in. L Carbon Steel Wood Boring Bit Hex Shank 1 pc

This bit's cutting edge is 40 percent thicker, and its shank is 25 percent larger than typical bits, which gives it exceptional strength and durability. The Irwin flat wood drill bit has a 6-inch shaft with a grooved 1/4-inch hex shank that provides a sure connection for standard chucks or quick-change adapters.