Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Handy tool to have

I have used this a number of times and have found it very usefull.Pros: extremely portable (no need for compressor), light, easy to use, can use either a 9 or 20oz bottle, CO2 is readily available at most Wal Marts.Cons: Can go through CO2 fairly quickly (20oz bottle a must), storage case not well thought out (Does not go back in without complete disassembly).Even with the cons it is a valuable asset to the tool collection and simplifies simple jobs.