Feature: 1. Stable Fixed: The ball head adpter is anti skid and shock proof, with rough surface particles, effectively increase contact area, not afraid of shaking. 2. Material: Made of aluminum alloy material for durability and reliability in the most demanding environments, weatherproof, durable and practical. 3. Practical: The ball mount base can be used with other accessories of the motorcycle mount, to fix the cell phone and navigation device during driving, and action camera to record travel. 4. Application: Fits dual socket arm cell phone mounts, and other cell phone mounts with 1 inch ball socket design, and can be installed on bicycles, motorcycles, mountain bikes, electric scooters and more. 5. Installation: Screw adopts thread design and can be directly installed on the original rearview mirror of the car or where there is a screw hole, which is convenient and quick to install. Specification: Item Type: Action Camera Ball AdapterMaterial: Aluminum alloy, rubber .Size: Approx. 1in/2.54cmMounting Hole: M8Application:Suitable for motorcycle, bicycle, mountain bike, mobile phone stand, with M8 mounting aperture Package List: 1 x M8 Ball Head Base