Bahco combination auger bits
Dual-purpose for use in both electric power drills and hand braces.
With just one cutting edge for easy regrinding, although regrinding will not be necessary so often, as this auger bit is made from hardened tool steel.
It has a threaded tip for moderate self-feed when using a power drill, but still sufficient self-feed when using a hand brace.
Use for quick precision cutting with all types of wood.