In contrast to plagiarism and conventional seam clamps, only the original S-5!® Clamps are all multiple tested on different materials and profiles by a third-party accredited US-lab. The S-5!® Z- and E-Clamps families have in addition the official technical approval by the DIBt, No. Z-14.4-719. The result of all tests was that the load capacities of the clamps are higher than those of the profiles. The tests confirms the high quality and load capacity of the S-5!® clamps.