... cap, bulk pack, non-sterile50pcs/polybag, 1000pcs/ctnRK21003red cap, individual flow pack, EO sterile1pcs/pack,50pcs/inner box,500pcs/cartonRK21004blue cap ... , individual flow pack,EO sterile1pcs/pack,50pcs/inner box,500pcs/cartonThanks for ... in advance and welcome to your early inquiry !!! Centrifuge Tubes with cover