Features 1、[Magnetic Stir Bar Set] The magnetic stir bar set includes a variety of sizes: 10mm, 15mm, 20mm, 25mm, 30mm, 35mm, and 40mm, ensuring you have the right stir bar for use. 2、[Smoothly Mixing] These magnetic stir bars are crafted from PTFE material, with smoothly finishes, ensuring smoother stirring and mixing. 3、[Heat Cold Resistant] These magnetic stir rods can withstand temperatures from -196℃ to 250℃ (-320.8℉ to 482℉), suitable for both cold and hot conditions. 4、[Anti Corrosive] Our magnetic stirrer bars are resistant wear, erosion, and high rotational forces, ensuring a stable mixing process. 5、[Versatile Applications] These magnetic mixer stir bars are suitable for laboratory, experimental instruments, analysis room, versatile and practical. Specification Item Type: Magnetic Stir Bar Set Material: PTFE Features: Withstand High Low Temperature, Non Stick, Well Lubricity Application: Instrument, Laboratory Size: Approx. 10mm/0.39in, 15mm/0.59in, 20mm/0.79in, 25mm/0.98in, 25mm/0.98in, 30mm/1.18in, 35mm/1.38in, 40mm/1.57in Package List 8 x Magnetic Stir Bars 1 x Plastic Box