The Edge Duraboard 180/180 Grit File (x 10) is a medium grit file, ideal for preparing the nail plate before acrylic and gel application and for shaping artificial nails. It is a washable, cushioned file providing a better grip, allowing for more control and faster refinement. Cleaning Instructions: Put nail file under running water and brush the grit surfaces lightly. Do not leave immersed under water for more than 10 minutes. Pat dry and allow to air dry for 24 hours before re-use. Also available in singles.