Stirring Bar Shape Octagon Material Alnico Product Type Stirring Bar Diameter - Metric 9.5 mm Overall Length - Metric 25.4 mm Overall Width - Metric Not Applicable Autoclavable Yes Color Green Standards FDA Compliant ISO 9001 2015 SGS Certification Coating PTFE Features Stronger Coupling with the Drive Magnet Keeps the Stirring Bar Centered and Rotating Effectively