7 Pieces PTFE Magnetic Stirrer Mixer Stir Bar and 6" Magnetic Stir Bar Retriever

Features: A NICE VARIETY OF DIFFERENT SIZED STIR BARS - comes with 7 pieces magnetic stir bars, varying size for a variety of containers; Small enough to use in test tubes and big enough to use in larger synthesis QUALITY PTFE MADE - the magnetic stirrer are constructed with a magnet assembled in and PTFE coating, resistant to corrosion and abrasion, nontoxic; durable and inert VERY VERSATILE - They are a popular way of stirring liquids in modestly sized containers; perfect for chemistry and biology research, home-lab use; home brewers to make a yeast starter, or tinctures/salves RETRIEVER - the magetic stir bar retriever helps you easily get to the bottom of the deep containers or flasks to pick up the stirrers; Perfect accessory for magnetic stirrer Size of Magnetic Stir Bars 1 Piece 10mm (Length) * 5mm ( Diameter) stir bar 1 Piece 15mm (Length) * 7.5mm ( Diameter) stir bar 1 Piece 20mm(Length) * 8mm ( Diameter) stir bar 1 Piece 25mm (Length) * 8mm ( Diameter) stir