StonyLab Support Retort Ring Set, 3 Pieces Iron Lab with Boss Head in Diameter 60mm 80mm 100mm for Laboratory Experiment, Sturdy Corrosion Resistant

Cast iron support ring with boss head clamp and thumbscrew Set comes with 3 retort rings in different diameters: 60mm, 80mm, and 100mm (one for each diameter) can securely hold various sizes of bottles and instruments Made of high quality metal, ensuring it durable, corrosion resistant, rust proof and sturdy constructed Commonly used for chemical reactions, filtrations, and experiments in laboratories, factories, schools, hospitals, researches, and so on StonyLab ensures high quality products and premium customer service