Dynalon Stir Bar Egg-Shaped, Ptfe 0.625 X 1.25"

Dynalon stir bar egg-shaped, ptfe 0.625 x 1.25";
egg shaped stirring bars bars feature… alnico v magnetic cores which are one of the most powerful permanent magnet alloys available.
egg shaped stir bars should not… be stored in a random mass or dropped on a hard surface, especially steel.
stir bars should… be stored in pairs to maintain magnetic strength.
in general…ptfe thickness accounts for 18% of stir bar diameter - DYNA