Attention! This is a very misleading list. There is only one photo showing a set of two clamps, not to scale. In fact, there are several different items on this list, most of which do not now reflect the photo. We ordered a Shimpo FG-M6FLM20 film gripper, serrated jaw, M6 thread, sample size 20mm wide, 100lb capacity. Biggest problem: We only received one clamp, not a pair like in the picture. Also, it differs in size, shape and style from the photos (see attached photo with pen for scale). It's reasonably priced compared to clips that are ridiculously expensive elsewhere, even for a single clip, and it works well, but it's narrower than we really need. We still buy and consider returning, especially if it affects our test results.