The Dremel 31-Piece Sanding & Grinding Kit is designed to meet all of your engraving, sanding, shaping, and smoothing needs and assist you in your woodworking projects. The kit features a durable storage case to keep all of the Dremel attachments organized and protected. Kit Includes: (15) 412 medium sanding discs, (4) 408 1/2 in. coarse sanding bands, (4) 432 1/2 in. 120 grit sanding bands, (1) 426 1-1/4 in. fiberglass-reinforced cutoff wheel, (1) 85422 silicon carbide grinding stone, (1) 402 mandrel, (1) 407 1/2 in. drum sander, (1) 932 aluminum oxide grinding stone, (1) 8193 aluminum oxide grinding stone, (1) 511 abrasive buff and (1) 84922 silicon carbide grinding stone.