Function: 1. With the smallest surface tension of solid material, high and low temperature resistant, corrosion resistant, non-toxic. 2. Widely used in petroleum, pharmaceutical and chemical research, analytical room for mixing the use solution. 3. Usage: Put the PTFE stirrer into the magnetic stirrer, stir or heat at the same time. 4. PTFE and high-quality permanent magnet refined, wear-resistant, high temperature resistance, chemical corrosion, stable performance and other advantages. 5. Non-toxic: with physiological inertia, as artificial blood vessels and long-term implanted organs in vivo, no side effects Specification: Characteristics: 1. With the smallest surface tension of solid material, high and low temperature resistant, corrosion resistant, non-toxic. 2. Widely used in petroleum, pharmaceutical and chemical research, analytical room for mixing the use solution. 3. Usage: Put the PTFE stirrer into the magnetic stirrer, stir or heat at the same time. 4. PTFE and high-quality permanent magnet refined, wear-resistant, high temperature resistance, chemical corrosion, stable performance and other advantages. 5. Non-toxic: with physiological inertia, as artificial blood vessels and organs implanted in vivo for a long time without adverse effects. Specification: Material: PTFE and high quality permanent magnet Color: as shown in the picture Size: Approx. 4x8mm / 0.2x0.3 inch 5x10mm / 0.2x0.4 inch 6x15mm / 0.2x0.6 inch 7x25mm / 0.3x1.0 inch 7x20mm / 0.3x0.8 inch 9x28mm / 0.4x1.1 inch 8x30mm / 0.3x1.2 inch 9 x 35mm/0.4 x 1.4in (widest diameter x length) Package List: 8 x magnetic stirrer stirrer stirrer