These roller refill are made from abrasive material and fit for standard callus remover, working with most dead remover as smoothly as one. All of the coarse surface is effectively controlled within the range that will never hurt or tissue. Color: pink Material: plastic Size: 6x2.5x2.5cm. Compatible with standard electric callus remover, easy to install and replace. Keeping callouses removed and moisturized is imperative to prevent cracks that would be hard to heal. Ergonomics design, never hurt or tissue. Remove dead and callus effectively and quickly. Package Contents: 5* Foot File Only the above package content, other products are not included. Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.