Features: The test tube rack pipettes organizers holder provides stablely support for test tube, dropper, pipettes tubes which hole diameter is 7cm, 22cm, making it essential tool in any laboratory setting. Crafted from pp, this test tube rack testing tube holder is light in weight, and good durability, ensuring long time use. Very suitable for laboratory researcher, chemistry analysts, biologists, and educators who requires convenient storage holder for their experiment and teaching tool. Widely use for research laboratories, educational experiments, chemistry analysis, and biological testing environment. This multifunctional test tube storage holder testing tube drying rack enhances efficiency and organization in your work place, ensuring that your test tube and pipettes dropper securely held during critical experiment. Specifications: Color: Clear Component: PP Type: 6Hole Rack; 8Hole Rack; 12Hole Rack; Trapezoid Tube Rack Size: Approx. 23x10.6x22cm/9.05x4.17x8.66in 7cm Rotating Tube Rack Size: Approx. 7x10.4cm/2.76x4.09in 22cm Rotating Tube Rack Size: Approx. 22x22cm/8.66x8.66in Weight: Approx. 500g Package Includes: 1Piece Test Tube Rack note: 1.Please allow 0-1cm error due to manual measurement. Be sure you donot mind before bid. 2.Due to difference between different monitors, the picture may not reflect the actual color