Quick Stack Cups - Speed Training Sports Set of 12 with Quick Release Stem by Armix (green) Go to amazon.com Related posts 12 best stacking cups game FeatureCups measure approx 3.7 inches highSet of 12 comes with quick release stemThe Leader in Sport StackingImprove hand-eye coordination and quickness DescriptionPackage: 12 Cups and 1 Stem