Redding's new Micro-Adjustable Taper Crimp Dies are top adjusting to simplify making precise adjustments. It features a knurled micrometer type barrel situated on the top of the die for easy access and provides approximately +or- .100" of "on-the-fly" adjustment after initial set up. Versatility is enhanced by the internal crimping sleeve which can be reversed to accommodate two different cartridges having closely related body diameters. An example is the 38 Super and the 9mm family of cartridge.