The cap can be closely attached to the 12mm diameter test tube which has great performance of sealing and prevent liquid leaking effectively
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The rack has 3 Layer and 2 slots that each layer has a direction,slide the shelves in from one side and the other side has a lip that stops it.The rack has three layers of holes with a smallest hole at the bottom to keep tubes steady,and the large holes on the top and the second floor
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Ideal for scientific experiments and storing beads,spices,liquids,seeds and more,but also can be used for mixing drinks to decorate Halloween,Christmas and scientific theme parties perfectly
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