2 Fill the serving machine set ball container with table tennis and hold approximately 110 ping-pong balls. 3 Twist the frequency button, the modulation is best for the service frequency. 4 Adjust the position of the machine according to your own preferences. Keywords: ping pong, pingpong, machine, robot, ping pong robot, ping pong ball machine, pingpong robot, pingpong machine. The item "Ping Pong Robot with 36 Different Spin Balls Table Tennis Robots Automatic Ball" is in sale since Thursday, August 30, 2018.This item is in the category "Sporting Goods\Indoor Games\Table Tennis, Ping Pong\Other Table Tennis, Ping Pong". The seller is "sailwal10" and is located in Sunnyvale, California. This item can be shipped to United States.