TS TAC-SKY 2.0 Wendy 3.0 Rail Helmet Mounting C3 Tactical Headset Hearing Protection + V2 PTTDescription 1. The bracket rail adapter is the center rail of the wendy 3. 0 helmet. 360 free rotation, the rail bracket can be fixed on the helmet sides of the helmet rail, the center telescopic rod can be adjusted freely. 2. The ear cups are made of silicone, which is more comfortable to wear and can bring better wearing experience compared with sponge ear cups. 3. These headphones use electronic active noise cancellation and sound capture