If you own a Stagg or Thomann EUB, you will need this for piece of mind. It is rather heavy and cumbersome, but It does the job. It has a design flaw, though. The lower supports cannot be locked when the stand is folded, I had to add some Velcro straps. You can even play your bass on the stand, although it is not ideal.
Not many alternatives on the market. Recommended!