This opener grips the bottle cap like a wolf on prey and pops it right off every time! We even added a slot for truing your brake rotors and a large hole for a keychain or carabiner. This is not just some generic opener we selected from a catalog – this is a precision-engineered tool that you will want to have with you all the time.  Weight is a mere 32g so you can carry it with you wherever you go (even on the bike). Precision shaping for the best bottle opening experience,Rotor truing slot for getting those rotors just perfect,Hole for a key chain or carabiner .