Wood Tenon Dowel Plug Cutter 1 Inch Tenon Cutter Plug Maker Woodworking Drill Bit - Amazon.com
Milescraft 3-Piece Tapered Plug Cutter Set - 1/4-In, 3/8-In, and 1/2-In - Steel Construction - Quick Change Compatible in the Woodworking Tool Accessories department at Lowes.com