Designed for maximum convenience and one-handed operation Bottom of each well interlocks with base of Nalgene cryogenic vial so that vial will not turn during opening and closing For positive vial identification numbers and letters are molded into each holder's upper surface. Designed to hold…

Snap Racks™ are constructed of durable glass reinforced polypropylene, with a center well to conveniently hold caps, seals, septa, etc. Racks snap together securely to double your rack capacity.