High Speed Steel Auger Bits in 1/4" Diameter to 2" Diameter. High Speed Steel wood auger bits quickly bores holes in wood and cuts through nails. Self-feed screw point self centers the drill bit. Our High Speed Steel wood auger bits come in 4-13/16" long, 7-7/8" long, 17" long and 23" long. If you are looking for longer auger bits over 30 inches long, see our carbide tipped auger bits as we have those up to 48" long!