For 50/55/60mm casters: 5pcs/bag, 50sets(250pcs)/carton. Each carton=2.1cuft(0.06CBM) The estimated weight of each carton=25kgs(55.12lb) For 65mm casters: 5pcs/bag, 40sets(200pcs)/carton. Each carton=2.1cuft(0.06CBM) The estimated weight of each carton=25kgs(55.12lb)