Rare Earth Extra Power Stir Bars, Elliptical, L × Diam. 15 mm × 10 mm, Z671665, Aldrich (CAT#: STEM-L-4933-Y)

Stirring bars using rare earth magnets have significantly increased magnetic strength compared to those using Alnico magnets, but more importantly they are almost totally resistant to demagnetisation.

Material: PTFE-coated (Elliptical)
egg-shaped
Mfr.: Cowie, 001.2615.RE
L: 15 mm
Diam.: 10 mm

Rare Earth Extra Power Stir Bars, Oval, L × Diam. 25 mm × 12 mm, Z671649, Aldrich (STEM-L-4929-Y)
Rare Earth Extra Power Stir Bars, Octahedral, L × Diam. 25 mm × 8 mm, Z671606, Aldrich (STEM-L-4930-Y)