Product Details describe: Suction type: Designed with a strong suction cup, the table tennis machine can be firmly adsorbed on the table or glass, which is very convenient. Spring Design: The spring design increases the elasticity, it is easy to exercise by yourself, great for indoor or outdoor. Cultivate: This table tennis training clip can exercise your child's hand-eye coordination. High-quality material: The table tennis trainer is made of high-quality plastic, which is wear-resistant and not easy to break. Features of the ball clamp, this is a great self-study tool. Size: Desk Clip Thickness: 5.5cm Height: 18cm Weight: 150g Material: PVC Color: black Quantity: 1pcs Table Tennis Ball Trainer notes: Due to different computer resolutions, there may be some color distortion. Due to different hand measurements, there may be slight errors.