These Stirrer Magnets can be used in place of overhead mechanical stirring, in many cases, with equal or better agitation

This extremely strong 3" x 3/4" wide magnet is mounted in a 3-1/4" circular aluminum housing. Two studs supplied, 1/4" outer diameter and 5/16" outer diameter, for attaching to chuck on a stirring motor. When used with certain ACE stirrer magnets with a large pivot ring, high velocity mixing can be achieved without spinout. This magnet is so strong, you can actually stir on the side of the vessel wall. Supplied with Allen wrench for attaching stud.