138 Piece Rotary Tool Accessory Kit-Compatible With Most Rotary Tools 138 Pieces to take care of most any rotary tool job you may have You can grind, cut, polish, buff, sand, clean, remove rust, peeing paint and more Great for many different hobbies and crafts-set weighs 13.3 ounces Compatible with most rotary tools-includes collets in 3 sizes: 1/8, 3/32, and 1/16 inch Great for working with small metal items like jewelry and miniatures