I feel it is necessary to write up a brief review of this product, having had the unfortunate circumstances of having 6 of them in the past 2 weeks. There are many great things about the flex arm mount. The arm itself is quite strong, and pretty flexible, allowing you to position your light in practically any position you please. The arm does not flex from the weight of the Prime either, a plus for fixtures like this. The set screw that holds the arm somewhat tight isn't the greatest thing but can be worked with.
However, there is one absolutely necessity that has failed 5 times out of 6. And that is the plastic bolt and female thread used to mount the arm onto the glass. I have had 1 of the 6 that threads easily like I believe it is supposed to. 3 of the 6 were extremely difficult to thread (I ripped the skin on my right index finger trying to thread one tonight until it got stuck half way). And 2 of the 6 simply won't thread at all. This is not good in any way, and I wanted to make people aware of this product design failure. If it weren't for this, the arm would be an awesome product. Unfortunately, it is not, and I'm still stuck with my 3rd prime not mounted onto my Reefer 250.
However, there is one absolutely necessity that has failed 5 times out of 6. And that is the plastic bolt and female thread used to mount the arm onto the glass. I have had 1 of the 6 that threads easily like I believe it is supposed to. 3 of the 6 were extremely difficult to thread (I ripped the skin on my right index finger trying to thread one tonight until it got stuck half way). And 2 of the 6 simply won't thread at all. This is not good in any way, and I wanted to make people aware of this product design failure. If it weren't for this, the arm would be an awesome product. Unfortunately, it is not, and I'm still stuck with my 3rd prime not mounted onto my Reefer 250.

