A practical, universal plastic clamp with a very strong spring to clamp background paper, background cloth or collapsible reflectors to a bar or a tube. With this clamp you can for instance prevent a background roll from unrolling. The clamps are provided with a movable top. This provides a stable fixation and uniform pressure on the object to be fastened.
NOTE! These clamps are attached to the side of the background roll, the core of the roll and the crossbar of the background system (NOT onto the background roll itself)