It has a screw shaped end point. Not as clean cut as a twist or flat bit. It is used with a hand drill Wood Hole saw Comprised of a twist drill surrounded by a large circular tube with a saw teeth.

A hole saw is a ring-shaped saw blade measuring from less than 1 inch up to 4 inches in diameter and includes a drill bit that attaches to a standard cordless or corded drill. In an effort to find ...