The clamp does what it should and works very well! Before that I had a pair of pliers which went only up to 2.5 mm² and rather flat trapezoidal pressed. It was a kind of collar that made the pressed sleeve very broad, so it was often necessary with pliers "rework" In order to receive the sleeve pressed into the screw. This is absolutely no problem with this gun. The crimped ferrules are nice and round, nowhere is facing an edge.
A small minus: The sleeves are firmly pressed during the pressing in the round that they properly clamp it and the wire must be aware pulled from the pliers, instead he just fall out when you open the pliers. This is not really a problem, but it is kind of annoying with time. Would be interesting, whether that's in the trapezoid crimping how to use NWS pliers also so.