Incredible selection of practical & useful accessories - turns your rotary tool multi-function. Includes large variety of mounted grinding stones, diamond & ide burrs, metal & bristle brushes Large & small sanding drums with rubber mandrels, wool polishing wheels, felt bobs, Dozens of cut-off, sanding and abrasive wheels, saw bit, mandrels and collet. Handy wooden storage box keeps all organized, easy to identify and ready for the next job. This is  truly a nice set and highly needed!