Features: 1. The updated accessories are compatible with specific headphones for use with FAST helmets, MICH helmets, and Peltor Comtac communication systems. 2. Tested compatibility allows Comtac I and Comtac II headphones to be attached to various FAST helmets using a mounting buckle. 3. After installation, the earmuffs from Comtac communication headsets detach from the original headband and securely clip onto the mounting buckles, which fit into the side grooves of the helmet. Once installed, the earmuffs can rotate freely. Usage: 1. Remove the earmuffs from the original bracket on both sides. 2. Carefully remove the headphone wire from the cover, breaking the loop seal if necessary. 3. Attach the earmuffs to the hanging buckles provided, aligning and clipping them securely on both left and right sides. 4. Mount the assembly onto the helmet. 5. Route the headphone wiring along the top of the helmet and secure it with adhesive tape. Package List: 1 Pair x Headset Holder