Perfect Dimensions: With a length of 150 mm (5.9 inches) and a diameter of 34 mm (1.34 inches), these test tubes offer a generous 110ml capacity. This makes them perfect for a wide range of uses, from storing candies, nuts, and beans, to beads, crafts, and jewelry. Exceptional Sealing: Each test tube is designed with a cap to provide optimal sealing. This ensures no liquid or other materials inside the tube leak out. You can fill the tubes with confidence, knowing the contents remain securely inside. Premium Quality & Material: This pack includes 48 clear flat-bottomed test tubes made from high-grade PET plastic. They are robust, hard-wearing, and to breakage. Plus, the caps are made from sturdy and reliable aluminum. These test tubes offer exceptional durability while and environmentally friendly. Versatile Applications: These test tubes are perfect for various uses beyond scientific experiments and hydroponics. Use them as decorations for events like Christmas, Halloween, or New Year's, or even for storing various items like powders, liquids, and more. Safety and Environmentally Friendly: Our flat-bottomed test tubes are made of non- PET plastic that's safe for humans and the environment.