Item name:Mini table tennis serve pitching training machine, Materials; PVC, Capacity: 20 table tennis,(not included) Suitable for: 40+ Serve drop point: random, Serve frequency: 2 - 3 seconds / ball, Suitable for crowd: beginners, table tennis enthusiasts, students, Installation: simple, easy to carry, Size:52*30*16cm, Power:4*AA batteries,not included Function: cultivate temperament and patience, exercise ligamentous joints, Promoting physical development, parent-child games, puzzle games, teaching equipment, Products and accessories: 1 X Mainframe, 1 X Spiral gravity disk, Item name:Mini table tennis serve pitching training machine, Materials; PVC, Capacity: 20 table tennis, Suitable for: 40+ Serve drop point: random, Serve frequency: 2 - 3 seconds / ball, Suitable for crowd: beginners, table tennis enthusiasts, students, Installation: simple, easy to carry, Size:52*30*16cm, Power:4*AA batteries, Function: cultivate temperament and patience, exercise ligamentous joints, Promoting physical development, parent-child games, puzzle games, teaching equipment, Products and accessories: 1 X Mainframe, 1 X Spiral gravity disk