The Aramith Premium Belgian Billiard Ball Set features the quality you’d expect from Aramith balls at a lower price. This set features 15 regulation pool balls and an Aramith cue ball. Aramith phenolic balls last up to five times longer than other balls made from polymers or polyester. You’re sure to get your money’s worth out of this ball set.1: High longevityThe PREMIUM resin with Vitrotech technology hardens and vitrifies the surface for durable brightness.2: Low yearly table costSmooth surface reduces drastically the table cloth wear resulting in far less cloth and ball replacement.3: Made of Aramith PremiumAramith Phenolic resin with high impact resistance and prolonged longevity..4: High quality standardsFor 8 criteria : density, balance, diameter, roundness, color, glossiness, hardness, weight.