Octagonal shape with fluted ends provides more turbulence than a non-fluted octagonal stir bar and can be used with containers with curved bottoms
Teflon (PTFE) casing is chemically inert, can be used with corrosive chemicals, and helps reduce friction and wear while spinning
Spins on the bottom of the container to disperse sediment and air bubbles
Internal magnet made from samarium cobalt provides stronger magnetic attraction in viscous solutions and at high speeds than a magnet made from an alloy of alnico V