CL Bailey Magnum Pool Ball Set High performance at an affordable price. The Level Best Magnum Pool Ball set evens the playing field with a consistent, durable ball that plays well. Each set is cast using a special DAP resin, that are known for excellent dimensional stability and heat resistance, along with a resistance to sudden, extreme jolts and severe stresses. Carries a Lifetime Warranty. Magnum pool balls sets are 2.25 inches in diameter meeting all billiard regulations set forth by the Billiard Congress of America. Made from a Phenol Formaldehyde Resin which keeps the ball perfectly round within 1/100,000, protects against burn marks and provides consistent play.