Material: CNC Alloy, Strong And Light. The light mount is plastic kit with rubber ring.
Net Weight: 63.5 g.
Compatible Handlebar Sizes: 25.4 mm and 31.8 mm. Package Included*1 pc Out-Front Bike Mount *1 pc The Spacer for 25.4 mm handlebar *1 set Clip for Gopro and the bicycle flashlight
Note: The original clamp size of this GPS mount is 31.8 mm. You have to add the spacer to fit 25.4 mm.