Description:1. Fit for1.5/1.8/2ml freezer tubes, 9x9 array, 81 Places.2. Constructed of cardboard with white coating and this style is waterproof.3. Keeps your freezer tubes firmly inside while the box is closed.4. Widely used on holding laboratory freezer tubes or centrifuge tubes.Specification:Material: Waterproof CardboardOverall Size: 132x132x50mm / 5.2*5.2*1.97 Inch (L*W*H)Hole Size: 13x13mm / 0.51*0.51 InchHole Depth: 31mm / 1.22 InchFitting for: 1.5/1.8/2mL Micro Tube, 81 PlacesPackage Content: 2 x Freezer Tube Box