2 Pcs FAST Helmet Fma Helmet Rails Adapter Tactical Helmet ARC Rail Adapter Attachment Kit For Peltor Comtac Headset Features: This tactical ARC suspension headset support bracket for Peltor Comtac can match with full range of FAST helmets, ACH helmet, MICH helmet as long as they have arc rails on side. By testing, Comtac I and Comtac II headset can be connected to the full range of FAST helmet with this headset adapter. With the hanging after the Comtac intercom headset, headset will be separated out from the arc-shaped headband, directly clip to the buckle. Hang buckle can be fixed to the helmet on the 2 sides of the helmet rails, after installation, the Comtac headphones headset can rotate freely. Rotating design allows headset to swing up and out of the way when not in use. Some assembly is required, mainly removing the ear muffs from the head band and then snapping them to the adapters. Specification: Material: Plastic Product Size: As Picture Shown Color: Black/Mud Color(Optional) Note: Please allow 1-3cm (0.4-1.18") difference due to manual measurement and slight color variation for different display setting. Thank you for your understanding, nice day! Packing list 2 x Helmet Rail Adapters(Not including helmets) _x000D_