Safe and durable test tubes are made of good material, more resistant to crack and break, and can easily grasp test tubes thanks to the perfect size. These test tubes are great for scientific experiment, can exercise hands-on ability, increase interest in learning and exploring knowledge. Whether you're collecting liquid or solid samples, this tube is designed to accommodate a variety of sample types, making it a versatile addition to any laboratory or research setting. Features -Color:Transparent -Material:Plastic -Size:15.00X1.60X1.60cm/5.89X0.63X0.63in -The size of the plastic sampling tube is convenient and practical, making it easy to carry and use. -The versatile design of the tube makes it suitable for various sample collection and storage purposes. -The tube is widely applicable in laboratory, and scientific fields, making it a versatile tool for professionals. - Work great for home, classroom, candy stores, scientific experiment institutes, etc. - Easy to use and store without taking up too much space, easily meet your different needs. Package list: 20