Product Description:This 12-pack of generic Super Coarse micro mineral rollers has been designed to fit the Emjoi Micro Pedi. These rollers are the next step up from our Extra Coarse Rollers. Specifically designed for tougher skin. Use this refill pack to replace your existing worn out rollers with a brand new pack.Simply place a new roller into the unit until it clicks and cheque the unit to ensure the roller is securely installed.Note! If you are using this for the first time please be extra cautious to avoid soreness or injury.