ITEM NAME:Drill Exercise Resiliency Tennis Balls Trainer With String Replacement Rubber LJ Features: Elasticity: About 130 cm / 51.2 inches Material: High quality rubber and woolen Category: Training Ball Promoting the amount of deformation: 0.20-0.25N Weight: About 83g Packaging: Single Package.Category: Training Ball. Material: High quality rubber and woolen. Due to the difference between different monitors, the picture may not reflect the actual color of the item.
