Solar Powered Flag Pole LightThis commercial grade solar powered illuminating flagpole light mounts on any flagpole 2"to 4"in diameter. This light has a 100 lux output and typically provides 6 to 12 hours of illumination based on conditions. Included strap will accommodate up to a 4" shaft. Larger diameter shafts will require a larger strap not included. *Not recommended for use on flag pole higher than 25'.