Instruct: Classify Amazon reviews into positive or negative sentiment
Query: Works but not really needed.

I installed it on a Dewalt 10 in Mitre saw (713). It installed with no issues and works pretty much as advertised. It isn't really a true laser as it is offset to the left of the blade instead of being right where the blade cuts. I find it just as easy to line up the blade as I do using the laser light.It is easy to see when using indoors, I haven't tried it outside. All in all for $10 you can't really go wrong.