Rare Earth Extra Power Stir Bars, Octahedral, L × Diam. 25 mm × 8 mm, Z671606, Aldrich (CAT#: STEM-L-4930-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 (octahedral)
octagonal (with pivot ring)
Mfr.: Cowie, 001.525.RE
L: 25 mm
Diam.: 8 mm

Rare Earth Extra Power Stir Bar Set, Elliptical, 10 Stir Bars Total, Z671681, Aldrich (STEM-L-4934-Y)
Rare Earth Extra Power Stir Bar Set, Cylindrical, 14 Stir Bars Total, Z671703, Aldrich (STEM-L-4935-Y)