1Highquality stainless steel material, the grinding head will not rust when exposed to water, good cutting performance. 2Mainly used for polishing and repairing old dead skin on the soles of the feet to make the skin of the feet smooth. 3Exfoliates the skin without damaging the normal skin of the feet, fast and effective, bring you convenience. 4High temperature resistance, corrosion resistance, strong hardness, wearresistant and easy to clean. 5Light weight, small size, the universal handle diameter is 2.35mm, suitable for most nail drill machine.