The funnels are made of glass. The set consists of funnels of different diameters. Perfect for a variety of laboratory experiments, these funnels are made of durable glass for long-term use. Different sizes allow for versatile used, making this set a must-have for any laboratory. Features -Color:Transparent -Material:Glass -Size:15.50X9.00X9.00cm/6.09X3.54X3.54in -Size:7.00X4.00X4.00cm/2.75X1.57X1.57in -Size:10.00X6.00X6.00cm/3.93X2.36X2.36in -Size:13.00X7.50X7.50cm/5.11X2.95X2.95in -Glass funnel set includes laboratory funnels of different sizes to meet different experimental needs. -These funnels are made of glass, ensuring durability and safety during experiments. -Funnels are designed with stems, making them easy to handle, allowing for simple use. -User-friendly, enabling efficient storage and organization, ensuring funnels are accessible when needed. -Versatile and suitable for use in chemical, biological, and other research environments, making them ideal for scientists. Package list: x Laboratory Funnels(40mm, 60mm, 75mm, 90mm)