Features: These glass tubes with corks have an ideal size of approximately 20x105mm, making them perfectly portable. Their capacity is around 20ml, enough to store your small samples or DIY crafts securely. Along with the test tubes, the package includes a pearl cotton test tube tray measuring approximately 14.57 x 14.57 x 3.94 inches. It is ideal for safely storing and transporting your glass vials with corks, keeping them organized and protected. Specifications: Main color: Glass test tubes: clear Capacity: approx. 20ml Main material: low borosilicate Size: Glass test tubes: approx. 20x105mm Pearl cotton test tube tray: approx. 14.57 x 14.57 x 3.94 inches/ 37 x 37 x 10 cm Package includes: 100 x Glass test tubes with corks 1 x Pearl cotton test tube tray Warm notes: Please allow slight deviation due to manual measurement. Please allow slight color differences due to different monitors.