Are you still looking for a convenient and practical test tube stand? Our product is your . It is adopted by good materials, with fine craftsmanship, has excellent durability and practicality, suitable for laboratory, school, hospital. etc. Features - ColorTransparent - Material: Plastic. - Size: 16.00X8.50X5.00cm/6.29X3.34X1.97inch. - Enough storage holes for test tubes, and the stable bottom design can hold test tube more firmly. A good helper for laboratory. - It is lightweight for convenient to storage and carry. makes it more easier to clean up. - Necessary equipment for laboratory, and your laboratory won't look so messy with it. - Designed for use in laboratories, but it also is a for science classrooms and household use. - The tubes can be placed in a test tube rack, an experiment to observe the phenomenon. Package list: 4 Tube Racks