Rare Earth Extra Power Stir Bars, Elliptical, L × Diam. 25 mm × 14 mm, Z671673, Aldrich (CAT#: STEM-L-4931-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, 001.2625.RE
L: 25 mm
Diam.: 14 mm

Rare Earth Extra Power Stir Bars, Elliptical, L × Diam. 10 mm × 6 mm, Z671657, Aldrich (STEM-L-4932-Y)
Rare Earth Extra Power Stir Bars, Elliptical, L × Diam. 15 mm × 10 mm, Z671665, Aldrich (STEM-L-4933-Y)