No pre-assembly & post-disassembly. Smaller size, lighter weight, & less occupied space. Unique speedlite mounting way: mounted horizontally or vertically by wrapping speedlite body. Reliable mounting: not require Velcro, no pressure on hotshoe, no metal scratches on speedlites. Mount size is adjustable to fit all brands of speedlites and even Godox AD-360, AD200. Bowens mount adds most studio flash accessories, e.g. softbox, reflector, beauty dish, etc. Umbrella input hole is available and adjusting lighting direction with handle is supported.