Features Use Place PTFE stirrer mixers in magnetic stirrer, stir or heat at the same time. Widely used in petroleum, pharmaceutical and chemical education research, analysis room to make agitated use solution. Refined high quality PTFE and permanent magnet, with wear resistance, high temperature resistance, chemical corrosion, stable operation and other advantages. Non-toxic: with physiological inertia, because artificial blood vessels and organs implanted in vivo for the long term do not produce any adverse effects. With the least surface tension of solid material, resistant to high and low temperatures, corrosion resistant, non-toxic. Features: 1. Use: place PTFE stirrers in magnetic stirrer, stir or heat at the same time. 2. Widely used in petroleum, pharmaceutical and chemical education research, analysis room to make agitated use solution. 3. Non-toxic: with physiological inertia, as artificial blood vessels and long-term implanted organs in vivo, no adverse reactions. 4. With the least surface tension of solid material, high and low temperature resistant, corrosion resistant, non-toxic. 5. PTFE and refined high quality permanent magnet magnet, wear-resistant, high temperature, chemical corrosion, stable operation and other advantages. Specification: Material: PTFE and high quality permanent magnet Colour: as shown in the picture. Size: approx. 4 x 8 mm/0.2 x 0.3 inches 5 x 10 mm/0.2 x 0.4 inches 6 x 15 mm/0.2 x 0.6 inches 7 x 25 mm/0.3 x 1.0 inches 7 x 20 mm/0.3 x 0.8 inches 9 x 28 mm/0.4 x 1.1 inches 8 x 30 mm/0.3 x 1.2 inches 9x35mm/0.4x1.4in (widest diameter x length) Package list: 8 x Magnetic Stirrer Bar Package List