Not bad at all
This little guy gets the job done. Light, easy to use, decent leverage. Could be a bit longer. The teeth that grip the side of the can seem like they will be the first to wear out though. For sure there won't be any aluminum from the can in your oil tank as the can opener is sharp enough. Nor will there be any metal debris from the opener as it is plastic.
ConsTeeth have to fit the can just right to open the can
Could be a bit longer for some more leverage as well as more functional for those of us with larger hands