Buy now the Rack Em Up Billiards Shot Glass Set on a special offer. Rack Em Up Billiards Shot Glass Set is a playful way to serve shots to a crowd. Billiards shot glass set features the traditional 1 through 15 billiards balls. Rack Em Up Billiards Shots are made of glass and hold 2.5 ounces each, and the set has a black serving tray that looks just like a pool ball rack.