Fill the base with sufficient water or sand 2. Tie the tennis ball with string to the base (anti-wrap hook) 3. Material Plastic.
Wiwaplex Tennis Trainer Rebound Ball String Solo Tennis Training Kit Portable
CHEGIF Tennis Training Ball String, 6-pack Tennis Trainer Balls Self Practice
Ahari Unlimited Premium Tennis Trainer Set, Pro Rebounder Metal Base In
Ahari Unlimited Pro Tennis Trainer Set with Metal Base, Carrying Cylinder, 3
