I also liked the fixed assembly. The bars have a turned-milled thread, which are then screwed directly with little effort on the trampoline frame. Although I was initially a model with a non-clean milled thread, but made the same customer service that I received an error-free product - so shall be the :)
Materials and workmanship are absolutely reasonable for the price. What else I'm not used by Bad Company. Who wants to spend more, please ...