This is a backup, you no longer need to replace the screw clip of this helmet with another. The design is sturdy and durable, waterproof and sunscreen, suitable for all kinds of weather and environment, not easy to fall off. The package contains only 1 screw clip, no other parts. It is specially designed for Bluetooth walkie-talkies and some motorcyclists' backups. It is suitable for any full helmet, half helmet, flip helmet, most of the open helmets that can cover the ears. Suitable for screw clamps of T-MAX series motorcycle helmet Bluetooth walkie-talkies.