The detachable design of this test tube rack makes it incredibly convenient for cleaning and organizing. With different sizes, it can accommodate a wide range of test tubes. This multi-functional design ensures compatibility with various experiments and research projects. Features -Color:Multi -Material:PP -Size:25.00X11.20X6.70cm/9.82X4.40X2.63in -Size:25.00X11.20X6.70cm/9.82X4.40X2.63in -Size:21.00X11.20X6.70cm/8.25X4.40X2.63in -Note:suitable for 13mm,16mm,18mm hole diameter tube, can holds 50pcs tubes(not included)/rack. -The detachable design of the test tube rack allows for easy maintenance. -The versatile design of the test tube racks is compatible with different sizes of test tubes. -The durable and stable construction of the test tube rack ensures use. -The compact design of the test tube rack saves space, making it ideal for crowded laboratories. -The set of the test tube rack offers flexibility for various experiments. Package list: 1 x Centrifuge Tube Rack 13mm 1 x Centrifuge Tube Rack 16mm 1 x Centrifuge Tube Rack 18mm