Description These laboratory support rings are very good laboratory assistants and are very practical. Application: This laboratory support ring is suitable for biological and chemical laboratory test bed to support a variety of beakers, flasks, etc. Lightweight and portable, very convenient for you to carry. Commonly used for chemical reactions, filtrations, and experiments in laboratories, factories, schools, hospitals, researches, and so on. Features- Color: Mainly silver- Material: Iron- Size: 17. 00X8. 50X2. 20cm Package Includings 2 x iron support rings