Shakespeare's Style 4720 Economy Rail Mount is designed for quick and easy installation on vertical or horizontal, straight or angled rails. Its simple design makes installation a snap. The vice section grips the rail, and the flat section supports the antenna. The flat section can also be bolted to a flat surface, instead of to the rail grip.
Standard 1" - 14 thread
Nylon adapters included for 7/8", 1", and 1-1/4" vertical or horizontal rails