These cylinders are made from quality borosilicate glass. It has many of the same qualities but is less expensive than Pyrex. This single graduated 500ml cylinder has permanent white single metric graduation lines at 5ml intervals ranging from 50 - 500ml to indicate approximate volume. It has an easy pour spout with a large circular base. Rated at 20 degrees Celsius.
Products being sold are not toys. They are for Educational / Laboratory use only. They are not for use by children 12 and under.