Ideal for light-sensitive specimens, this all black storage box is suitable for use with 0.5, 1.5, and 2.0 mL micro-tubes, as well as most other brands of cryogenic vials The reinforced seal, triple hinges and locking clasp keeps samples secure while the box is closed. Each box features and alpha-numeric grid on the exterior and interior, stacking rings and a matte surface suitable for printing and labeling.