Postlite Powerful solar charging performance 6 possible colors to choose from Change colors with a flip of a switch Easy twist-on lid with large rubber seal 360 Degree lenticular light diffusing lens and domed reflector maximize light output Installs easily with no wires Patent pending universal fittings for 1-5/8", 1-7/8", 2-3/8", Brock Post and 3-1/4" ID posts, universal flat surfaces