Fits for 8ft/9ft 8-rib Outdoor Patio Wood Umbrellas; Shape of Umbrella Ribs: Square; Dimension of Each Rib Tip (WxH): 1/2' x 7/8' (13 x 23 mm) Powered by the sun, energy-efficient, low power consumption and energy saving Latest improved solar panel, high conversion rate and long usage time Red button for turning on/off the LED lights; Creates romantic ambiance and ample warm lighting for outdoor patio & table umbrellas Easy to install, 42 all-weather plastic clips for fixing strands onto umbrella's ribs