Holds round, section and flat material securely. With adjustment screw and release lever and perfect for one-handed operation. High clamping pressure due to toggle lever action. Jaws for round workpieces, with wire cutter. Pliers: chrome vanadium electric steel, forged.
I bought an original Irwin Made in China vise from this German brand. Irwin was fine, but these German-made Rennsteig pliers (looks like a copy of the Knipex version) would not squeeze or open. I returned it the same day I received it. Very disappointed.