Feature round holes w/gasket in silicone rubber material, these Uni-Deck & Dual-Deck test tube racks allow accommodating test tubes of different diameters tightly and both Uni-Deck & Dual-Deck test tube racks are extendable for many more test tubes by simple assembly between each two, offering a very flexible and cost-effective laboratory solution.

· Made of ABS material, autoclavable

· w/Silicone rubber gasket, accepts all the tubes of diameter ≤18mm

· Individually free of assembly, convenient for use

· Extendable by simple assembly between every two racks