This is a great cable drum for the ridiculously low price. I've been using it for a while now with 50m long speaker cables for 100v musical horn applications and it has been working great. It makes coiling the cable and setting everything up much easier and more effective.
The only drawback I've noticed so far is that the drum plastic seems a bit flimsy and unless handled carefully, could possibly break.
There is a hole in the middle of the drum that allows you to pull the cable through the center and mount a connector if you wish, which is has been very useful.
TL:DR great cable drum for the price, would recommend