Support-rings, set of 3

These three support rings maximise safety when handling hot liquids;
Large ring (D=102 mm) for holding heat protection nets
Medium ring (D=62 mm), for securing beakers or flasks
Small ring (F=35 mm), for securing Erlenmeyer flasks
Length (stem end - ring centre): 135 mm
Material: Nickel-plated steel, large stainless steel ring
Weight: approx. 175 g