This ham radio Rotor plate is a great addition to your amateur radio setup. Made with 12GA. Galv. Steel ,This Rotor plate is perfect for those looking to enhance their radio communication experience. It is compatible with size 25 G towers and designed for optimal performance. Whether you are a professional or amateur radio operator, this antenna is a must-have in your kit. Can also be used for High Def Television. U-Bolts included. Note if your tower measures 10 inches between poles this will fit.