These 50ml clear glass test tubes with screw caps are essential for any laboratory setting. They for sample testing and storage, providing a secure and airtight seal. The transparent glass allows for easy observation of the contents, making them ideal for scientific research, experiments, and educational purposes. Features -Color:Transparent -Material:Aluminium, glass -Size:10.00X3.00X3.00cm/3.93X1.18X1.18in -Material: crafted from transparent glass, these jars are durable and allow for clear visibility of the contents, essential for accurate sample observation -Size: with a 50 ml capacity, these jars are ideal for small sample storage, making them for laboratory use, diy projects, and more -Lid: the screw caps ensure a tight seal, preventing leaks, which for maintaining the purity of your samples -Set: this you have plenty of containers for various uses, from scientific experiments to home storage solutions -Application: for storing and testing samples, these jars are a for laboratories, hobbyists, and anyone needing reliable small storage solutions Package list: 30 x Tiny Jars with Aluminum Screw Lids Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 988 hours Hope you have a pleasant shopping experience!