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 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 magnetic stir mug or heating magnetic stirrers, can direct contact with food SIZE: 26mm x 7.6 mm /1inch x 0.3 inch, Weight: 3g Magnetic Stir Bar Stainless Steel Magnetic Stir Bar Auto Stirring Mug Bar Self Mixing Coffee Mug Magnet Suitable for Self Stirring Mug STIR BAR FEATURES: 1. Made with stainless steel material, reduced noise during rotation 2. Easy to clean 3. Works with most magnetic stir mug 4. If the magnetic stirring mug stir bar you purchased has lost its magnetism, or if the stir bar is missing, our stainless steel stir bar is your Color: Silver Material: Stainless Steel Package Contents: 5 x Stirring bar Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.