Stirring Bar, Shape Octagon, Material Alnico, Product Type Stirring Bar, Diameter - Metric 9.5 mm, Overall Length - Metric 51 mm, Overall Width - Metric Not Applicable, Autoclavable Yes, Color Green, Standards Compliant, ISO 9001:2015, SGS Certification, Coating PTFE, Features Stronger Coupling with the Drive Magnet Keeps the Stirring Bar Centered and Rotating Effectively