Huge in two ways: First, the quality of the product. No damage to the plastic, both weigh their promised 15kg ... On the other hand, as already mentioned by previous speakers, the vast dimensions. The 15kg-discs are almost 7cm thick and have a diameter of about 38cm (!!!). With a reasonable Langhantelstange no problem. Good price for this service, plus extremely speedy delivery! Gladly again!