The Medicool CC4 bit is designed to work with a wide range of leading electric nail file systems, including Medicool's ProTouch 1000, Pro Power 30k, Nail Pro 2000, TurboFile 2400 and PediSenso, as well as popular brands like Kupa, Aseptico, Bravo, Buffalo, Nail Labo, Lasco, Dremel, and Erica's.