Now you can use old tennis balls to keep score! The Tennis Score Tube fits right over standard net posts, attaches to the net, or hangs on a fence. Installation is quick and easy. Stainless steel clamp to secure to net post or net is furnished. Hooks are also supplied for fence mounting. Easily sets up in seconds with no parts to rust or break. Made of durable sealed plastic in the USA. Includes game numbers 0 to 7. Tennis balls not included. 42" long, 3 1/4" diameter.