Description These are glass watch glasses, and different sizes can meet your different needs. It is made of high-class glass material, and after polishing process, it can be safely used for laboratory. Multifunctional, can be used as an evaporating dish, can be used as a lid, can be used as a container, can be used as a carrier. These practical glass watch glasses are widely used in laboratories, school and experiment. Features - Material: Glass. - Size: 5.00X5.00X0.50cm/1.97X1.97X0.20inch. - Diameter: 50mm. - Constructed by using high-grade glass material, ensures it safety and can use it with confidence. - Highly functional laboratory glassware with a variety of uses in the classroom or laboratory. - The ground edges and polished surface provides a safe product for handling in the classroom or laboratory. - Multifunctional, can be used as an evaporating dish, can be used as a lid, can be used as a container, can be used as a carrier. - Suitable used for laboratory, school, home, experiment and more, which will meet your different needs!Package list: 10 x Beaker Covers