I purchased this on Amazon. It worked without any problems, but I can no longer use this umbrella holder because I installed a child seat in the front. ---------------------- [Amazon Product Details] MARUTO Cycle Umbrella Stand Kasasuke Color: Black Size: Umbrella handle diameter 15mm to 25mm, bicycle handlebar diameter 22mm to 23mm Material: Resin/PBT, Pipe/Steel This product is for sunshade purposes and is recommended for use with umbrellas like parasols. Do not use with vinyl umbrellas or folding umbrellas. Umbrella handle diameter 15mm to 25mm compatible. Bicycle handlebar diameter 22mm to 23mm compatible. Can also be installed on electric bicycles. Cannot be used in conjunction with front child seats. Do not use in strong winds, crowded areas, angles that obstruct visibility, or areas with heavy traffic. This product is exclusively for women's bicycles. Do not use on other vehicles.