Showing how powerblocks work (using my Sport 9.0 as example in video) and comparing the various powerblock models. I realize I screwed up and said the heaviest upgrade goes up to 120lbs per hand -- it actually goes up to 130 (90+40lb addon). Also, this wasn't really a "quick" video like I said at the beginning -- sorry! =) Note - I returned these for the Sport 5.5 model which I review here: www.youtube.com
