Features: 1. The updated accessories are compatible with specific headphones for use with FAST helmets, MICH helmets, and Peltor Comtac communication headsets. 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 buckle, which fits into grooves on both sides of the helmet. Once mounted, the earmuffs can rotate freely. Usage: 1. Remove the earmuffs from the original bracket on both sides. 2. Pull the headphone wire out from under the cover, breaking the retaining loop if necessary. 3. Attach the earmuffs to the hanging buckles provided, aligning properly and securing on both left and right sides. 4. Mount the assembly onto the helmet. 5. Route the headphone wiring over the top of the helmet and secure it with included tape. Package List: 1 Pair x Headset Holder