SIZE: 26mm x 7.6 mm /1inch x 0.3 inch, Weight: 3g HIGH QUALITY: Mixer stir bars are to high temperatures, abrasion and high rotational forces, stable speed and do not deviate from the center WIDE APPLICATION: Suitable for various magnetic stir mug or heating magnetic stirrers, can direct contact with food 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 Magnetic Stir Bar Stainless Steel Magnetic Stir Bar Auto Stirring Mug Bar Self Mixing Coffee Mug Magnet Suitable for Self Stirring Mug