I take this - contrary to instructions - without any problems at a heating rod in connection with a plant lamp.
The Kemmgelenk is very strong and the mechanism leiert far the weekly reposition so far is not enough.
The clip light is the shape of the screen optimized for conventional halogen lamps. Some E27 LED bulbs are slightly higher and may protrude. This should be considered when buying.
Using LEDs, the lamp is barely warm. In halogen lamps, these are due to the steel body, the heat accordingly.
Overall, highly recommended!