Shakespeare 4720 Eco "Rail-Mount" antenna bracket is supplied with nylon adapters that fit both 22, 25 and 32mm tubes and strips. The bracket fits antennas with a standard 1" x 14 thread.
Specifications:
Can also be mounted on vertical flat surfaces
Standard 1" x 14 external thread
Construction: Stainless steel and Nylon
Mounting type: 22, 25 and 32mm pipes (and flat surfaces)