KNIPEX 13 96 200 T Pliers for Electrical Installation - YouTube
NTD: Knipex 1396200. A buddy in the EU swears by these, so I figured I'd give them a go. The little cam allows the spring action to be partial open (as shown)
Knipex Pliers (art. 1396200) Protective Cap with Beltholder by Yurshevich | Download free STL model | Printables.com