Elevate your laboratory mixing experience with the Cowie VWR Magnetic Rare Earth Stir Bars. Designed for superior performance, these stir bars feature a robust rare earth magnet that ensures efficient mixing, even in viscous solutions. Measuring 15 mm in length, they are perfect for a variety of applications, from chemical reactions to biological experiments. Their smooth, rounded edges prevent damage to glassware while providing optimal stirring action. Easy to clean and resistant to chemicals, these stir bars are a reliable choice for any lab setting. Enhance your experiments with precision and ease!