1Safely and efficiently remove the horniness on the foot skin, will not damage the normal skin of the feet. 2Perfect for polishing and repairing old dead skin on the soles of the feet to make the skin of the feet smooth. 3The universal handle diameter is 2.35mm, applicable for most nail drill machine, light and easy to install. 4Great stainless steel material, the grinding head will not rust, has excellent durability and cutting performance. 5High temperature resistance, corrosion resistance, good hardness, wearresistant and easy to clean.