This Martin Tools Metal Bumping Manual is an excellent instruction manual that provides an authoritative reference to techniques and methods for all phases of body and fender work. It is titled "The Key to Metal Bumping" and is 126 pages full of over 100 illustrations for visual assistance. It covers most approaches to the most common body repair problems. You will find a glossary of terms commonly used in the trade as well as explanations of many time-saving shortcut methods to make your work better and easier.