Most professional tap and die sets are made of high-speed steel, while the standard tap and die sets are made with carbon steel. The HSS tap and die sets have a higher quality of course, but homeowners don’t need such tools since they will not be using them so vigorously. Home use tap and die sets can also be small with less tools inside than professional tap and die sets, since homeowners only need a few of them for minor repairs every once in a while.