Detachable centrifuge tube rack size: LxWxH 7.9x6.7x2.4 inches, Hole dia: 1.18 inches. A way to help you count and store vials, 25 hole vial box to store 50ml centrifuge tubes. Please browse picture for better size reference, and make sure you purchase a right size box for your tubes.Package includes 1 box WITHOUT tubes. 50 ml tube also being available to choose in store.