7 PTFE Stirs bars.  Sizes: Diameter x Length 5x10mm, 6x15mm, 7x20mm, 7x25mm, 8x28mm, 8x30mm, 9x35mm

Use these in combination with an Erlenmeyer Flask and Stir Plate to make a yeast starter.  A stir plate… keeps yeast in constant contact with nutrients, encourages CO2 to off gas and continuously incorporates oxygen.  All of that means higher cell counts.

Update: Since this post was published the price, availability or promotion has changed.  Check the product page for current description, price and availability.  Also: Today’s Deals on Amazon

BIPEE 7pcs Octagon PTFE Magnetic Stirrer Mixer Stir Bars White Color

Also: Yeast Starters & Fermentation Resource Page | StirStarter Stir Plate | Yeast: The Practical Guide to Beer Fermentation

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Higher Cell Counts, Decreased Lag Times, More Vigorous Fermentations, Great Warranty StirStarter Stir Plate – Hands on Review!