They work fine, but quite surprised how bad the fit in the front is for the color filter - the metal holder for the filter could be 3cm bigger!
So it dangles a lot, but it holds.
And the power cable is super short - about 25 cm I would say. Not pratical if you buy 3 of these to be put on the same plug - then you can max have them 20cm away from each other.
And I bought the Varytec LED Bulbs 13W that were meant to fit Par30 but it turned out they are a tiny bit too big and can easily be scratched with the screw holding the safety wire. No idea if that problem is from the Bulbs or the PAR can.
Apart from all of that - it's cheap, light, and does the job fine :D