Aluminum Alloy Cycling Bike Phone Holder Motorcycle MTB Road Bike Handlebar - Black Features: Easy to adjust the width from 55mm to 100mm, compatible with most mobile phones and GPS. Four claws hold your cell phone tightly in the cradle. Constructed from aluminum alloy, lightweight and durable. Suitable for 31.8mm handlebar diameter, use the included spacers for 25.4mm/22.2mm handlebars. Can be used on motorcycle, MTB, road Bike, E-bike, folding bike, scooter, etc. Specifications: Material: Aluminum alloy Weight: Approx. 70g / 2.5oz Package List: 1 x Bicycle Phone Holder