Material: Aluminum alloy CNC mechined, lightweight, durable for use.Function: Your action camera can be safely fixed on the helmet.Compatible: Universal fit for GOPRO, fit for Coyote, fit for YI, fit for GITUP and other sports cameras.Easy Installation: The helmet camera mount comes with gaskets, no other tools needed, easy to install and operate.Portable: The helmet base adapter is easy to carry, accessories for sports lovers, great for leaving hands free while still shooting photos or video.Specification:Material: Aluminum alloyColor: BlackSize(LxW): About 46x40.5mm or 1.81x1.59inchPackage includes:1pc x NVG Helmet Mount1pc x Adhesive pad2pcs x Plastic gasketNote:1. Due to the light and screen difference, the item039 s color may be slightly different from the pictures.2. Please allow 1-2 cm differences due to manual measurement.