Standard basketball number seven

Basketball is a type of ball used in sports, and the ball part is usually made of rubber or rubber material. In standard competitions, basketball has a diameter of approximately 24 centimeters and a weight of approximately 620 grams. Spherical surfaces usually have raised lines to increase the grip and control performance of the ball. The standard air pressure for basketball is 8.5 pounds per square inch. In games, players need to frequently control and pass the ball, so the quality and feel of the ball are crucial for the player's performance.