キャブレターの戻りをスムーズに素早くする、万が一のトラブル時のフェールセーフとして使用するラバーバンド。

This rubber band makes the return of the carburetor quicker and still maintains a smooth action. It can be used as a failsafe in case of radio interference or loss of receiver battery. The return strength can be adjusted by the number of bands used. The set contains both black and grey bands to match all cars and engines.