The rules of table tennis state that the ball shall be: spherical, with a diameter of 40mm and weigh 2.7g and be made of celluloid or similar plastics material and be white or orange, and matt
The rules of table tennis state that the ball shall be: spherical, with a diameter of 40mm and weigh 2.7g and be made of celluloid or similar plastics material and be white or orange, and matt