Big Horn 19164 Plug Cutter set allows you to easily make chamfered plugs to conceal screws and joints. Bits feature slightly oversized tapers for a snug fit. Set includes 1/4", 3/8", 1/2", and 5/8" size bits and have standard 1/4" round shanks for easy quick change. These carbon steel bits will work in your drill or drill press, perfect for do it yourselfers and Pros alike.