Professional Table Tennis Training Robot Fixed Rapid Rebound Ping Pong Ball 2 Types Machine Table Tennis Trainer for Stroking Main Features: Table tennis trainer table clip design, easy to set the installation, table thickness 1-5.5cm can be used. The height of the trainer is adjustable, up to 54cm, and the yellow part is not bent. Trainer with deformed universal bar, transparent tube with elastic steel wire, rebound speed, fear of violent strokes. The product includes 2 ping-pong balls, both with copper sleeves to protect holes, and the ball rotates more flexibly and smoothly. Specification: Material :ABS, Aluminum Table clip distance: 0.39-2.17in/1-5.5cm Height adjustable: 0-21.26in/0-54cm Weight: About 191g Package Included: 1pc* trainer Note: Please allow manual measurement error of 1-2cm. Different computers display different colors, and the actual color of the item may be slightly different from the picture. No Retail Box.Packing Safely in Bubble Bag.