Check the listing for details. WOODRIVER Marble Game Router Jig. Condition: New. Listed at 61.98 USD. WOODRIVER Marble Game Router Jig, 182897, Jig machined from 5/16"-thick clear acrylic with an aluminum centering pin, Makes two different 19"-diameter marble game boards: Chinese Checkers and Aggravation, For use with 5/8" router bushing and 1/2" round nose router bit (sold separately), Uses 9/16"-diameter marbles (not included), Circle Jig shown in the process of making the Marble Game is not included, Make two classic marble game boards using this WoodRiver® Router Jig. Accurately machine a Chinese Checker pattern and an Aggravation pattern using this jig and a plunge router fitted with a 5/8" bushing and 1/2" round nose bit. Pattern is designed for making 19" diameter game boards. Circle Jig shown in the process of making the Marble Game is not included.