The Pro-Cup Tournament Value Pack by Aramith features Duramith Technology which extends the life of the balls up to 8 times longer than regular polyester Billiard balls. In addition to the Tournament Ball set, the Value Pack includes The Jim Rempe training ball, Pro-Cup cue ball, Aramith Liquid Ball cleaner and the Micro-Fiber cloth. A great value for one of the best ball sets in the industry.