Features: The pingpong Balls training device ensures a consistent trajectory of the Balls and displays hit rate and spin. Easy to install and features a clamps base, which ensures a secure and firmly grip on table and stability throughout the training session. Perfect for practicing and training at school, home, club or tournaments. It helps practitioners improve the accuracy of self-discipline, shortens the training process for athletes to shape their hitting movements. The robot can placed at any point on the workbenchs. Great for stroking practice in a central table position. Specifications: Materials: ABS40, plastic, iron Height adjustable: 0-800mm/0-31.50inch Package Includes: 1set Table Tennis Training Robot note: Please allow 1-2cm errors due to manual measurement, make surely that you not mind before order. Due to difference between different monitors, the picture may not reflect the actual color.