This broke on me after one use. I wasn't trying to support anything heavy, just an Atomos Shinobi with a battery. But two different things failed immediately: first (less of a problem) the glue holding the rubber grommet on each end spattered onto the sides when screwed in; The second (more serious problem) when attempting to fully tighten the cocking lever to prevent movement, the internal mechanism broke and the whole thing began to wobble. I've used a lot of spanners and a lot of small items and I usually like their stuff, but this thing is the definition of "done cheaply". Would give zero stars if I could. Very disappointed. Will return.