MAGNETIC STIR BAR: The stir bar is made of high-quality 316 stainless steel. The center belt is made of food grade PP material. Which is self-balancing and low-noise, with smoother rotation and better quietness SIZE: 26mm x 7.6 mm /1inch x 0.3 inch WIDE APPLICATION: Suitable for various magnetic stir mug or heating magnetic stirrers, can direct contact with food HIGH QUALITY: Mixer stir bars are to high temperatures, abrasion and high rotational forces, stable speed and do not deviate from the center Magnetic Stir Bar Stainless Steel Magnetic Stir Bar Auto Stirring Mug Bar Self Mixing Coffee Mug Magnet Suitable for Self Stirring Mug, Weight: 0.01763698096 pounds, Manufacturer: Frewurwer