The Cuticle Bit Ball Coarse is a diamond-coated bit crafted for precision and efficiency in nail prep work. Its wide ball-shape head with coarse grit is designed to safely and effectively clean the eponychium, remove hard or loose cuticle lifted from the nail plate, and smooth sidewalls and backwalls during manicure and pedicure services. With a standard 3/32″ shank size, it fits all professional nail e-files.