The CM-P101 is round pole mounting bracket for security cameras.  This pole mount bracket allows cctv installers to mount outdoor security cameras or security camera housings to round poles with diameters between 4.5 inches (115mm) and 5.7 inches (145mm) using the steel straps that are included.  If you need to accommodate larger diameter poles, larger straps can be sources and added to this product.  The flat surface mounting area dimensions are 9.5 inches (240mm) Tall by 6 inches (156mm) Wide.  There are also various pre-drilled mounting holes on the this unit.  Please see details below.

Round Pole Mount Dimensions

Surveillance Camera Pole Mount Features