- Durable Iron Construction: Our beaker support rings are crafted from high-quality iron, ensuring they are waterproof and reusable for long-lasting performance in any laboratory setting. - Three Size Options: Available in three practical sizes—60mm, 80mm, and 100mm—these ring retort supports cater to various experimental requirements, making it easy to find the perfect fit for your needs. - Essential Laboratory Tool: These support rings are ideal for conducting chemical reactions, filtrations, and other experiments in laboratories, schools, hospitals, and research facilities, providing reliable support for your glassware. - Versatile Applications: Suitable for educational institutions, home laboratories, and professional research environments, these flask ring clamps are designed to enhance your experimental setup and ensure safety and stability. - Performance You Can Trust: Each support ring is designed to secure flasks and beakers firmly in place, minimizing the risk of spills and accidents during experiments, thus promoting a safer working environment.