A supporting ring with an inside diameter of 150mm for use with a retort stand. The ring uses a separate boss-head clamp (not included) that allows the distance of the ring from the stand rod to be varied. * Plated mild steel with 8mm diameter stem. * I.D. of ring 150mm * Length of stem 140mm * Eisco type CH0668D https://elecena.pl/product/27243860/eisco-retort-stand-ring-150mm 2024-11-12 https://elecena.pl/product/27243860/eisco-retort-stand-ring-150mm 2025-08-11