240 grit -______ file - used for natural nails. this file grit is also used for the preparation of the natural nail prior to nail extensions and overlays. Can be a straight file, boomerang, or a block.
180 grit - slightly _________ file - used for nail extension and pre-tailoring tips, blending, shaping and refine surface after system application. Can be straight or a boomerang file
100 grit (or 80 grit) - a _______________ file - used for removal of nail extensions. Can be straight or a boomerang file.