A user of this Crimping plier has reviewed it on amazon.com
"Wiha tools are first class and this tool is no exception. This crimper is the type that dimples the barrel of the lug on one side; which I think gives a better crimp than the types that flatten the lug with shallow arc jaws from both sides. This crimper also has one side of the dimple tapered to avoid abruptly pinching the wire and weakening it. It works smoothly with no slop and the jaws align perfectly. The finish is superb and the ergonomics of the handles are great."
Hope you find this review helpful. Also knipex makes a similar kind of crimpers.