• Set of 8 transparent glass test tubes with stoppers included. • Secure closure that protects samples, liquids, and small objects from dust and moisture. • Rigid and fully transparent design for clear observation of contents and levels. • Smooth surface easy to clean, suitable for laboratory glassware and chemistry work. • Ideal for use in school, home, and professional settings for sample handling and scientific learning. • Dimensions of each tube: 20 x 2 x 2 cm.