Plunge Ball Marble Storage Router Bit (1/2"e shank)
|This bit made for us cuts a 5/8"e diameter slot for storing marbles used in board games. This bit can be plunged into a game board to make the open and then moved along to cut a storage slot for marbles. If you are not 100% satisfied with these bits, send them back for a refund.
Only $29.99 at Rockler.com