The file is curved to fit the natural curvature of the nail. Each one of these luxury pieces is crafted by artisans. A safe and solid design grounded in ergonomics. Great for children and those with disabilities. High carbon stainless steel ensures that it will stay clean and not rust. Recommended for: Those using their fingertips when workingMusicians Those who want to look stylishAthletes Those who struggle to use nail clippers Those undergoing rehabilitation