About this itemColor: We ship the item in the color of the first photo. Package quantity: If the quantity is not specified in the , we ship the item according to the quantity and model number indicated in the title. If there is no quantity in the title, it will be a single piece. Only the contents of the above packaging are included, no other products are included. Note: Due to lighting and differences between monitors, the color of the item in the photo may differ slightly from the color of the actual item. The permissible measurement error is +/- 1-3 cm. Characteristics. [20cm extension cord for bike handlebars] To mount a bike handlebar with a diameter of 18-32mm. Durable Aluminum Alloy. Compared to carbon fiber rods, aluminum is strong. Super lightweight, portable and durable material. [Application] Can be used on bike handlebars to add extra storage space for bike lights, GPS or mobile phones, etc. Specifications.Color: 20CM Aluminum Double Rack - BlueMaterial: Aluminum alloyFunction: Bicycle extension bracket Inventory.1*Bicycle extension rack