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.