Super B專利設計了一種工具，可以輕鬆快速地單手安全固定齒盤。該工具具有可調節的開口，適用於齒盤上有10至17顆齒的輪齒，並且與5至11速齒盤兼容。
該工具使用彈簧固定，可以快速而穩固地鎖定齒盤，避免滑動。這有助於防止齒盤變形，並保護您在使用時的手部安全。
-----------------------------------------------------------------------------------------------------Super B patanted to secure the cassette by one hand easily and quickly.
Adjustable opening so it is suitable for sprockets with cogs from 10~17 teeth, compatible for 5~11 speed.
Fixed with a spring to lock the sprocket fast and firm without slipping away.
Prevent the sprocket deformed and protect your hands from injuries while using.