Lab Ring Stand - 24" The TN Lab Supply Laboratory Stand Set includes: Heavy Duty Lab Stand Base (9" x 6") Weighs 3.5lbs Rod is 24" Long with a 0.45" Diameter Two Retort Rings (2.25" and 3.9" ID) One 7" Spring Clamp Three Rod/Ring Clamps (Two 90 degree and one parallel) Suitable for laboratory setups using various clamps, rings and other attachments Stainless steel rod screws into the base; clamps and rings can be attached to the rod Useful for suspending a test tube above a burner flame, or inverting a beaker or flask The base is coated for chemical resistance and to protect against spills Lab Ring Stand Applications Lab stands are ideal for all areas of science and chemistry for holding, positioning and adjusting lab apparatuses involved in an experiment. The base of the lab stand is chemically-resistant from reactants or spills Provides sturdy support for equipment, such as glassware, using clamps Rings are often attached to support flasks and beakers Probes and other sensors are often attached to vertical stands to support them hanging into various containers and to maintain a constant location TN Lab Supply Lab Stand Accessories TN Lab Supply offers many accessories for lab stands including clamps, boss heads, rings, lab jacks, and more.