Set of 4 DiscoveryHealth Extra Coarse Pedi Refill Rollers for Electronic Pedicure Foot File is guaranteed to be compatible with amope Pedi Perfect Electronic Pedicure Foot Files, and many other brands of pedicure devices. Use this refill roller to replace your existing worn out rollers with a brand new pack. These roller heads are specially designed for amope refills with microabrasive mineral particles (mesh #60) and diamond crystals to quickly and easily remove tough, lifeless skin. Used with the Pedi Perfect Electronic Pedicure Foot File, or Velvet Smooth Express Pedi Electronic Foot File , the roller heads exfoliate the foot through a gentle and safe rotating action, buffing away hard skin in minutes leaving you with feet that you’ll want to show off. Easy-to-Replace Roller Head The roller head should be replaced when it is worn. The wear depends on the intensity and duration of the treatment sessions.1) To replace the roller head, ensure the unit is turned off. 2) Remove the roller from the unit by pressing the eject button on the side of the unit and gently pulling the roller away from the unit. 3) Place the new roller in the unit by pressing in the pins on either side of the roller head and inserting the head into the device. 4) Check that the roller head is securely attached to the device before use. Simple Operation Move the unit in regular passes over the dry, dead skin applying light to medium pressure. Continue with regular passes until the dead skin is removed and your feet feel silky soft. Stop if the skin becomes sore or inflamed. Disclaimer: DiscoveryHealth is an independent manufacturer of quality replacement rollers. DiscoveryHealth(TM) replacement rollers are in NO WAY connected or affiliated to the trademarked manufacturing companies.