Stir Bars Magnetic 90mm ,Each

Details:

Magnetic stir bar^ super-strong komet 90 round magnetic stir bar, polytetrafluoroethylene coated, size: 25 x 90mm, high-energy samarium-cobalt (smco) magnetic core, superior mixing action at high speeds, and with viscous media, 25 s 90mm, sterilize with steam to 121 degree celcius