This pedal is plastic but it is not particularly fragile, and manufacturing is very good. When in addition we know that it costs only twenty euros, there is nothing to say.
I use it in a roundabout way. I opened it and I connected the two outputs by a resistance of 100 ohms (I have not made a precautionary measure 0 ohms), soldered to the pads of jacks. Thus the two outputs are always active and the same. It makes me a solo pedal with two outputs, the two pots I use to set the gain in each of the positions of the switch. Be careful if you do that the pedal is not guaranteed!
I would put 10 because when I think a Boss cost 5 times as much!