Aramith 2-1/4" Regulation Size Premium Billiard/Pool Balls, Complete 16 Ball Set Complete set of 16 balls includes 8 solids, 7 stripes and a cue ball; Each ball is regulations size, measuring 2-1/4" in diameter Crafted from the highest quality phenolic resin which provides exceptional scratch and impact resistance Phenolic resin is proven to last up-to 5 times longer than balls made of polymers or polyester; Features the classic "numbers in the stripe" design Aramith Premium billiard balls utilize Vitrotech technology; a heat-curing process offers maximum impact resistance, ensuring superior playability and durability Designed with perfect roundness and balance, uniform weight and hardness, brilliant colors and a friction resistant roll; Ideal for billiard players of all skill levels