Features: Premium Quality: Made of high-quality nylon and ABS material with 2 adapters for OPS Core ARC and for Team Wendy M-LOK rails. High Performance: The tacticals headset helmet rail adapter attaches your communications headset directly to your tacticals helmet's curved accessory rail so you no longer have to fight for space inside your helmet or remove your helmet pad to mount your headset. Multi Angle Rotation: The connecting arm installed on the headset can realize 360 rotation of the headset. Foldable Design: When the headset is not in use it can be folded outward or backward onto the helmet which is very convenient. Quality Assurance: Our product will definitely win your heart with its premium quality! If you have any inquiries please contact us. Specification: Material: Nylon+ABS Size: 10.5*13*4.5cm Color:Black/Mud Color/Green Net Weight: 0.15kg Notes: Due to manual measurement please allow a slight error in size. Due to the difference between different monitors the picture may not reflect the current color of the item. includes: 1 *Helmet Headphone Rail Adapter Kit