4 Pieces 18 mm by 14 mm Transparent Glass Tube Adapter Clear Scientific Tube Adapter for Science and Lab Experiments -2.75 Inch-

4 Pieces 18 mm by 14 mm transparent glass tube adapter clear scientific tube adapter for science and lab experiments Features: Quality material: Made of thick glass material, these transparent glass tube adapters are not easy to get damaged. With smooth surfaces, these adapters are quite easy to clean. Easy to use: These scientific glass tubes are easy to use, you can directly use them for lab and science experiment, and you will receive comfortable and pleasant experience during the using process. Safe package: The glass adapter is packaged with foam, which makes sure the glass tube not to break during the process of transportation, and you will receive the complete product. Specifications: Material: thick glass Quantity: 4 Color: transparent Size: Length: 7 cm/ 2.75 inch Outside diameter: 18 mm Inside diameter: 14 mm Package content: 4 x Scientific glass adapters Warm notice: Please allow slight size error due to manual measurement. Each glass tube is equipped with independent foam packaging.