[6 Pack Replacement Refill Rollers]2 Fine Roller Head,2 Regular Roller Head,2 Coarse Roller Head. [3 Different Coarse Levels]Extra coarse for effectively remove even toughest hard skin; Regular coarse for softens & smooths regular hard skin; Gentle coarse for perfect and keep good daily maintenance. [Complementary products]It is perfectly matched with for Shizhou Electric Callus Remover for Feet, for Pedicure Kit and compatible with most of the electric foot grinders on the market. [Points to Note]Please make sure the model of your devices are for this roller before ordering. [Easy To Install] the button, remove the old roller head and install the one. Color: Black Material: plastic Package Contents: 6 PCS x Replacement Roller Head Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.