Quite possibly the worst (and the lightest) brakes I've ever used, Clb professionnel. Every nut and bolt is aluminium, which is nice, gets the weight down to 160gr the pair. However... Those brake blocks are tiny! About 40% less contact than regular on the rim, and in the rain as much use as a chocolate fireguard.
And did they squeal? They're french, of course they did!