Dynalon 304495-0001 Cross Head Magnetic Stir Bar, PTFE 10 x 8 mm

PTFE cross head stirring bars offer greater mixing action at bottom, side, and top of container, even at low stirring speeds. Cross head stirring bars have no splashing and feature far less noise. For test tubes, round bottom or flat bottom labware. PTFE resin with cross-shaped fins and encapsulated Alnico-V magnets.