Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Excellent in a pinch

If you're finding that your keyring is just a growing mass of metal, yet you want to carry a pocket knife, this is just the item for you. The Utili-key helps me to open packages and tighten odd screws here and there. It's true that you must be careful not to cut yourself when opening the tool, but once you get the hang of it, it's not an issue any more. My only problem is that it's SO small and unintrusive I sometimes forget I have it when I need a knife!