Safe rotary file: 1,2 mm - 100% safety. The rotary file has no abrasiveness and cutting notches. - Multifaceted working surface gently pushes cuticles back without doing damage to natural nail. - Perfect for removing pterygium, lifting up cuticles, and cleaning out sinuses of nails. - High wear-resistance; practically does not grind off. - Disinfectable in all solutions. - Sterilizable at 180 С