the hardware package have come apart during shipping process and nut , bolt & washer be scatter everywhere . I be miss a few piece , -lrb- shipping box have hole -rrb- so I could not add the third tier . I assemble with only two tier and it be already very sturdy as be . regard the miss hardware , I call customer service and minute later I have a order prepare for the miss piece . painless customer service ... with a real person ! I will not be put on dumbbell on until I have finish assemble , but I think the process so far warrant a 5-star review .