So all in all I bought this in place of the Mac Tools Air Chuck that I needed to replace. It's lighter, thinner, uses AAA batteries instead of watch batteries, is more accurate, comes with all the fittings for all the tires and a quick release for changing which I thought was great, has a little light which I found odd but it really helps with double venting. It's not as durable though, has a lot more features that can be confusing, and can't be used to deflate tires unless it's hooked up to an