3 Roller Heads： One set foot dead skin remover pedicure kit including 3 different quartz sand grinding heads. 2 Speeds Adjustable： Low speed is suitable for the callus of hands and more delicate skin care. High speed is suitable for stubborn thick calli and dead skin. It can easily to controlled, its speed as you request, fast or slow, more convenient. Wet and Dry： The electric foot file has a waterproof design, the head can be rinsed under running water after dermabrasion. It can effectively solve the problem of bacteria breeding in the gap of the foot and protect the health of the foot.