1?��Dead Skin Removal: The food sanding head can be used to polish and remove dead skin, calluses, corns, etc. on the soles of the feet, repair cracked heels, make the foot skin smooth and tender. 2?��Exfoliation: The foot callus grinding head helps exfoliate the foot skin without damaging the normal skin of the feet, fast and effective, used with the electric nail drill machine. 3?��Easy Rotation: The foot callus sanding bit can be rotated clockwise or leftward for smooth cuts in clockwise and counterclockwise directions, ideal for left and right hands, simple and practical. 4?��Multiple Application Places: Lightweight and small size, easy to store and carry, can be easily put into your bag, perfect for home, nail salon, pedicure salon, etc. 5?��Stainless Steel Material: The toenail drill bit adopts stainless steel material, high strength, firm and sturdy, anti-rust and impact resistant, no deformation, stable and durable.