While most other polymer and polyester balls try to imitate the look of the Aramith billiard balls, none offer the quality of phenolic resin. Beautiful in the box, most look quite different only a few hours later. Beware of imitations and check for the Aramith name to be sure that you've got a genuine Aramith phenolic ball set. Six of the balls are numbered 2 through 7 Set includes 15 red, 1 yellow numbered, 1 green numbered, 1 blue numbered, 1 orange numbered, 1 black numbered, 1 deep red numbered and 1 cue ball