Features: 1. The updated accessories are compatible with Comtac series headphones and designed 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 hanging buckle system. 3. The earmuffs from Comtac walkie-talkie headphones can be detached from the original headband and directly clipped onto the buckle. The buckle secures 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 (breaking the hoop seal if necessary). 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. 5. Route the headphone wiring over the top of the helmet and secure with included tape. Includes: 1 Pair x Headset Holder