Nail files set is ideal to file and rough up the hard fingernails and toe nails in 100 grit while 180 grit smooths up your nail edge with refined shape. MEDIUM GRIT (180) - Gentle shaping of gel/acrylic nails of medium thickness and for shaping the free edge of nails. Whether your nails are chipped, bristled or just require your daily maintenance, these will surely become your best the tools. Color: colorful Per Size: Length 17.5cm/7.0" x Wide 2 cm/0.78"x Thickness 0.4 cm /0.16" Suitable for:nail salon, nail competition, makeup studio or home use. Not need spend more money in beauty salon next time.