Our bicycle coffee cup holder is made of selected aluminum alloy and eco-friendly PC, which is sturdy and durable. It is suitable for road bicycles, mountain bikes, scooters, folding bikes, electric bicycles, etc.Material: Aluminum alloy + environmentally-friendly PCProduct Outer dODiameter: 85*100MMProduct Inner Diameter: 80MMPacking Size: 130*110*20MMWeight: about 53.5G (including packaging)Applicable: Mountain bike/road bike/folding bike/various modelsProduct List: Bicycle coffee cup holder*1Notes:1. Due to the color temperature of the display, camera, ambient light, and photography skills, the pictures of some products may have a slight color difference, and the color is subject to the actual product!2. Please allow a slight size difference due to different manual measurements.