Designed by Josh Frankel, copyright Binary Arts 1998, made in China.
(plastic, 3.6 inches diameter by 5/8 inches thick)

Arrange the balls in numerical order. The balls can be cycled through the gaps at both ends, which are set back from the ends by one ball (so the order of the balls can be changed by parking and unparking balls at the ends as they are cycled). This puzzle ends up being as more of a dexterity puzzle than a logical one. Diamond Bob's Billiards Nine Ball Diamond Bob's Billiards Nine Ball is a harder puzzle in this theme.