The 7/16 bit I ordered had huge burrs on each sharp edge. Maybe usable, with enough power to turn it and a lever to drive it through the woods. With a magnifying glass and some small whetstones I cleaned up all the edges. It looked good then and felt sharp. A test cut in a piece of walnut made a hole that fits the .438 gauge pin nicely, so it's pretty much accurate after you condition it. Satisfy my needs.