This is a great duster for general cleaning, such as dust prevention. It's great to blow some stray dust off your keyboard/desk or off a monitor screen. The stream of air it provides is a decently powerful burst, though if you need a sustained strong burst of air for more thorough cleaning (such as heavy dust accumulation in heat sinks or fans) you may still need to complement this with compressed air.

It has worked great for me. It's not as powerful as canned air but it does get the job done. Also it looks like a little funny cannon...which is awesome.

I like this rocket blower better than the other ones because of the adjustable spout.