EPCO Billiard Balls are manufactured of the highest quality "Partek" resin. Over 50 years of ball manufacturing experience accompanied by extensive research & development allows EPCO to produce Billiard Balls to the highest standards of precision roundness, balance and weight control. Combined with attractive styles and color combinations, EPCO Billiard Balls represent the finest in the Industry. Quality, Precision, and Style - Made in the U.S.A.