I used it for 8 months in 4m50.This is my first deck, but I already use the structure of 50mm.More: great for mobile disco because not too big, strong, lightweight structure easy to carry.under: weight of the feet!The price / quality ratio is excellent!After this bridge can not be expanded because it is not standard, but I think a bridge in 4m50 discomobile it highly enough!We must also think about having special brackets, because the structure is 10mm, so the standard hooks (50mm) will be too big .. (Or hole and then use screws, but it becomes longer ..)With my current budget, I sure do it again this election!