The Bello Borosilicate 3.3 Glass Test Tubes are a set of 6 tubes that are 15x125mm in size. They come with a plastic tube stand for easy storage and organization. The test tubes do not come with a lid, but you can use cork/stopper to seal them securely. Made from durable borosilicate glass, these test tubes are ideal for various healthcare, lab, and dental applications. The BELLO NATURALS FEEL BETTER EVERYDAY brand ensures quality and reliability in scientific research and analysis.