Descirption:100% brand new and high quality Features:A professional and practical helmet camera mount holder basecompatible-for Hero 9 8 7 6 5 4 3+ 3, adjust its position for optimal perspective.Allows you to attach your action camera for Hero to any helmet outfitted with an NVG plate.Aluminum alloy material, the mount holder is durable and lightweight. Mounts your camera securely on the helmet for convenience recording the scenery while riding or bicycling.No tools required, easy to install and remove, a wonderful helmet camera mount kit accessory. Specification:Material: Aluminum Alloy + ABSSize: Approx. 46x40.5 mm/1.81x1.59 inchColor: Black Notes:Please allow 0-1cm error due to manual measurement. pls make sure you do not mind before you order.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Thank you Package Includes:1 Piece Fixed Mount Base1 Piece Long Screw