Stirring Bar, Shape Octagon, Material Alnico, Product Type Stirring Bar, Diameter - Metric 8 mm, Overall Length - Metric 40 mm, Overall Width - Metric Not Applicable, Autoclavable Yes, Color White, Standards FDA Compliant, ISO 9001:2015, SGS Certification, USP Class VI, Coating PTFE, Features Center Molded Pivot Ring Minimizes the Contact Area Between the Bar and the Vessel Reduces Friction and Chattering, For Use With Vessels.