Often copied never equalled the original malleable cast iron screw clamps from bessey the classic screw clamps dating back to 1936 unmistakable thanks to their unique high quality profiled rail and their characteristic malleable cast iron arms serrated for reinforcement the integrated bessey anti slip system additionally ensures maximum safety this is why the original bessey malleable cast iron screw clamps have proved so successful for so many years and so ideal for all applications where power