Micro grit sanding sheets comparable to approximately 12000 grit - 3 pieces. Size of sheet is 7" x 8". Suitable for polishing jewelry and other materials in wet or dry applications that require very fine and controlled scratch patterns. Designed for craftsmen to replace the use of steel wool, rottenstone or pumice. These micro grit abrasives can polish to an optically clear, reflective state or through the use of a more coarse micro grit, leave a matte or satin finish.