SuperNail Nail Prep File Refills are ideal in removing pterygium from the nail plate and side grooves of the nail. The perfect compliment to SuperNail's Nail Prep Cuticle Pusher, these refill pads will help gently remove dead skin from the nail plate. Refill packs contain 5 strips of 10 self-adhering nail prep files and are available in 180-grit.