16 PCS PTFE Magnetic Stirring Bar Set - Laboratory Stirrer Mixer Bar - Stir Plate Magnet Bar Rod Stick - Spinning Spin Mixing Bar for Lab (8 Big + 8 Small): Amazon.com: Industrial & Scientific
Buytra 7 Pieces PTFE Magnetic Stirrer Mixer Stir Bar and 11.8" Magnetic Stir Bar Retriever, White: Amazon.com: Industrial & Scientific
Spinbar Micro Stir Bars
10 Pcs 20mm/0.8 Inch Small Stir Bar, PTFE Magnetic Stir Bar, Magnetic Stirrer Mixer Stir Bar, Laboratory Bar: Amazon.com: Industrial & Scientific
Magnetic Stir Bar Replacement – Vinmetrica – Sulfite (SO2), Malic, Alcohol & pH/TA tests for Wine, Beer & Kombucha.
Fisherbrand Octagon Spinbar Magnetic Stirring Bars:Hotplates and Stirrers: Stirring | Fisher Scientific