The item is a professional and practical helmet camera mount, which are mainly made of durable hard plastic and metal materials, and specially designed to mount your Yi camera securely on your helmet for convenient to record the scenery while you are riding. With easy to install and use, it is really a wonderful helmet camera mount kit for choice. Feature - Color: Black - Material: aluminium alloy - Size: 4 x 4.6 x 5cm - Made of aluminium alloy material, the mount holder is durable and lightweight - You can mount your camera securely on your helmet for convenient to record the scenery while you are riding. - Fit OPS CORE style and most of the NVG mount base - No tools required, it is easy to install. Package Including 1 x Helmet Mount for camera