G-81 Bicycle Mount to attach your smartphone to the handlebars. Secured with a clamp ring. Made of durable steel. Compatible with smartphones ranging from 55 to 100 mm in width. Weight: 71 g. Features and product characteristics: Bicycle mount for smartphones with a width between 55 and 100 mm. Attaches to your handlebars with a clamp ring (31.8 mm diameter). Protects your smartphone from bumps and accidental drops. Use your navigation system or other apps during your bike rides.