Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Hardwood flooring nail gun

First off, the unit is advertised as a nail gun but is a stappler. This can be missleading, especially if you already have the cleat nails, of course they will not work in this unit. Secondly, the one I received had a crack in the casting where the air line quick conect fitting threaded in which caused it to leak air immediately and caused it to jam on the first stapple. The casting is very thin at that point. The unit had to be returned and I had to buy a name brand unit anyway.