Screw-Saver was designed to simply and easily modify a standard flathead or hex screwdriver. Remove a stripped hex screw by making an oversized driver. Perfectly match any flathead screw. For most people a flathead screwdriver probably remains the same size as when they purchased it. Yet, many wish it could be just a little thinner. When this is the case, if you attempt to make the change with a grinder the result is often less than perfect. It can be frustrating for even the best metalworkers to grind down a screwdriver. Now, with Screw-Saver, the job is easy. Simply insert your screwdriver into the chuck, set in place, make the correct adjustment, then cut. With micro adjustments you can fine tune your project.