Material: Grade AAA premium billiard pool table balls set are made of polyester resin which provides exceptional scratch and impact resistance; the pool ball rack is made of solid pine wood Pool Ball Set: Billiard balls are produced to the most exacting tolerances, meeting all professional quality benchmarks for size, roundness, density, balance, weight, color, and hardness, ensuring superior playability and durability Pool Ball Rack: Our pool ball racks are reinforced to make the racks more durable to use; ​the edges are smooth enough to help reduce the wear of your pool table cloth Size: Each billiard ball measures (2-1/4") 57 mm in diameter, and (5.9 oz) 168 grams in weight; the triangle rack dimensions are 13 x 11.6 x 1.25 inches, the diamond rack dimensions are 12 x 8.25 x 1.25 inches What's Included: The order includes an 8-ball triangle rack, a 9-ball diamond rack, 16 professional standard pool balls cased in a box great for game rooms, bars, sports matches, leisure exercise, and players at all skill levels The billiards pool balls and racks set including a 8-ball triangle rack, a 9-ball diamond rack, and 16 professional standard pool balls measuring (2-1/4") 57 mm in diameter and weighing (5.9 oz) 168 grams. The billiard balls are produced to the most exacting tolerances, ensuring superior playability and durability. The reinforced pool ball racks are more durable and its edge is smooth enough to help reduce the wear of your pool table cloth. The set is great for game rooms, bars, sports matches, leisure exercise, and players at all skill levels.