Brand: Untoom Material: Aluminum Alloy Color: Black, Silver, Red Width: 55mm (Max to 100mm adjustment) Compatibility: 3.5 inch to 6.5 inch Mobile Phone Fit Handlebar Sizes: From 22.2mm to 31.8mm in Diameter Applicable: Bicycle, Mountain Bike, Road Bike, Motorcycle, Scooter, Strollers, Treadmill and Shopping Carts. Weight: 100g