Description:1. Fit for 10ml micro-centrifuge tubes, 7x7 array, 49 Well.2. Made of cardboard, lightweight, easy to carry and safe to use.3. Keeps your sample tubes firmly inside while the box is closed.4. Widely use on holding laboratory tubes or centrifuge tubes.Specification:Color: WhiteMaterial: CardboardOverall Size: 138x138x118mm / 5.43*5.43*4.65 Inch (L*W*H)Fit for: 10ml micro-centrifuge tubes, 49 WellHole Size: 18x18mm / 0.71*0.71 InchHole Depth: 64mm / 2.52 InchPackage Content: 1 x Centrifuge Tube Rack