They are replacement heads for electric foot grinders, using sturdy materials and durable for long term using. They can help to remove crusty and dead skin, offering you a satisfying using feeling to have pedicure work. Practical foot file heads are not easy to deform and brings you of convenience. Features - Color: Black -Material:ABS - Size: 4.50X1.50X1.50cm/1.77X0.59X0.59in - The foot file rollers can be used for most electric pedicure grinders, meet your demands very well. - Adopting sturdy materials, the foot file roller replacement are not easy to get deformed or broken, support long term using. - The foot file replacement heads are easy to install and replace due to the small size, light weight, no special skills required. - Easily remove the dead skin of the foot, the pedicure rollers take care of the tender and smooth feet. - The electric foot file roller can be used repeatedly, enough for you to clean dead skin on your feet. Package list: x foot file roller heads(coarse type)