Features: 1. The updated accessories are compatible with specific headphones for FAST helmets, MICH helmets, and Peltor Comtac communication systems. 2. Tested compatibility allows Comtac I and Comtac II headphones to connect securely to various FAST helmets using a mounting buckle. 3. The earmuffs from Comtac communication headsets can be detached from the original headband and directly attached to the mounting buckle. The buckle fits into grooves on both sides of the helmet. Once installed, the earmuffs can rotate freely. Usage: 1. Remove the earmuffs from the original bracket on both sides. 2. Pull the headphone wire out from the cover (break the loop seal if present). 3. Attach the earmuffs to the hanging buckle (align properly and secure on both left and right sides). 4. Mount the assembly onto the helmet by inserting the buckle into the side grooves. 5. Route the headphone wiring over the top of the helmet and secure it with adhesive tape. Includes: 1 Pair x Headset Holder