Check the listing for details. 2pcs Tactical Military Helmet Side Rail Mount Adapter 360 Rotation Army Guide. Condition: New. Listed at 10.98 USD. Main Features: Made of good-quality ABS material, it is wear-resistant and durable. Easy to use and install, suitable for 19mm guide rails. It can rotate 360 degrees, making it more convenient to use from multiple angles. It can be externally connected to air gun fast helmet devices, such as flashlights, for a wide range of applications. Specifications: Material:Nylon Color:As Picture Size:4.6cm/1.8inchx3cm/1.2inchx1.7cm/0.7inch Package Includes: 2Pcs x Helmet Side Rail Adapter 1Pc x Hex Wrench Note: Please allow 1-3cm differences due to manual measurement. Due to the difference between different monitors,the picture may not reflect the actual color of the item.Thank you! On Dec 15, 2023 at 02:00:01 PST, seller added the following information: