Stamped steel bases, with black enamel finish. Removable, zinc plated steel rods. Bases and Rods are also available individually. Lab stands are used in every area of science - especially chemistry, for holding and manipulating an experimental apparatus. If you want to create a home laboratory, a retort base & rod are essential for any experiment setup. The durable and sturdy construction of this set makes it an excellent choice for science classrooms, household laboratories & basic professional laboratories.