1. This kind of helmet is made of high-quality materials, which is durable and not easy to be . 2. Using multiple sets of bolts and nuts, you can easily install the helmet on the back of the helmet. 3. Solid color can easily match the color of your outdoor helmet. 4. Outdoor helmet accessories/dump truck bracket 5. Aluminum alloy dry squid tactical helmet bracket base Name: helmet base fittings Applicable gender: male, female, neutral/male and female. Colour:As Shown Material:Aluminum Alloy Package Contents: 1 * Camera Mount Adapter Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.