Aramith balls feature perfect roundness and balance, as well as uniform weight and hardness. Formed into brilliant colors with a friction resistant roll and reaction. When you make an investment in Aramith balls, you can be assured you are getting one of the highest quality ball sets on the market. Aramith phenolic balls last up to five times longer than other balls made from polymers or polyester. Billiards-play simulators have shown that Aramith phenolic balls are still perfectly playable even after 400,000 hits, whereas others were rendered unusable