ATN ACMBAYJARM J-Arm Adapter Bayonet Adapter Black Anodized Aluminum, Compatible W/Odin Lt Monocular The J-Arm Bayonet Adapter Is a High-Quality Accessory That Is Designed To Work seamlessly With a Odin Lt Thermal imaging Monocular. It enables users To Easily Attach Their Device To a Helmet Allowing For Hands-Free Night Vision Operation. With Its Simple Yet Sturdy Construction, The J-Arm Bayonet Adapter provides a Reliable And Secure Platform For Surveillance In Low-Light environments. Material: Aluminum