Hang the Turn-a-Score tennis scorekeeper on the fence or the net of the court to easily view the matchs score. Players can simply dial the numbers on the unit to change the score. For complete fairness, the score can be read simultaneously on both sides. Rust-free and fade-resistant design. Comes with hooks or tie wraps for temporary or semi-permanent installation. Manufacturer's Product Care Note:Score Keepers are designed for either indoor or outdoor use. However, please do not leave this product outside for extended periods. Plastics will gradually fade over time in direct sunlight. Therefore, we suggest storing the scorekeepers inside when not being used for competitive play. We cannot warranty products that are left outside for extended periods.