Scott, as you use your new Dremel you will discover how to use it and what accessories you will need . The drum sander gets the most use by far, opening wheel wells, thinning out the edges , deburring , etc. there is also a smaller drum sander that is useful as well . the next most used is a small thin metal saw blade I use it for cutting plastic and alum, brass copper tubing and cutting window posts for top chops and also (after a lot of practice) cuts on the body for sectioning . I like using some of the round shaped grinders for removing trim and badges . the polishing wheel for any white metal parts you may have .