These Perch Arms give TONS of added perch space to your round martin poles. Each arm is 27 1/2 inches long. They come in sets of 3 arms that have both an upper and lower level. They are made from solid 3/8 inch aluminum rod with custom brackets that will attach to your own round pole. Fits round poles 1-1/4 inch Outer Diameter (O.D.) to 2-3/8 inch O.D.
Includes: 3 perching arms, 6 brackets, stainless hardware, Instructions for easy assembly.
Using perches makes your site more attractive to the purple martin by giving them something to sit on and examine your housing.