Expell Cryo Tubes are designed with a focus on the best user experience and convenience. Featured with single-handed QuickSealTM closure, the external thread design allows tightening or removal with only half a turn. These are one of the only cryo tubes with external thread and star foot which can be stored in 10x10 cryo boxes, saving up to 23% storage capacity compared to conventional cryo solutions. They are also compatible with common workstations on the market.