Review (3/5): Not for natural nails...
OK now let me say these are very good for filing/nail shaping. As for buffering, if ur not careful, they'll buffer ur natural nail right off! Perhaps I missed it but I think these are meant for acrylic not natural nails. 2 sides are extremely coarse, on is better for buffering natural nails and the 4th side is for polishing after buffering. I'll have 2 continue my search.