Sometimes it's hard to find the right tool for watches with large cases, but this Beco Delrin Die set definitely fits the bill. You have everything you need in one kit. You get 24 dies with durable m6 brass threads. There are 18 round cases in sizes from 16 to 59 millimeters and there are 6 dies for square cases that range from 20 to 45 millimeters.  the die set comes in a functional storage box which makes it easy to find the dye you needed a glance and to move the kit from place to place. For this die set and other Beco products go to Stuller.com today.