Stirring Bar Kit, Shape Octagon, Material Alnico, Product Type Stirring Bar Kit, Overall Length – Metric 12.7 mm, 15.88 mm, 25.4 mm, 38.1 mm, 50.8 mm, Autoclavable Yes, Color White, Standards FDA Compliant, ISO 9001:2015, SGS Certification, USP Class VI, Coating PTFE, Features Convenient Storage Box Included, Package Quantity 16