The die assembly consist of a stationary (upper) die, a moving (lower) die, and a locator. When mated, the dies form three crimping chambers.

The top of the stationary die is marked with the wire size (mm) that corresponds with each crimping chamber. The locator wire stop is used to ensure correct positioning of the wire and contact during crimping. Two of the crimping chambers are marked with a color dot code that matches the color–coded contacts for a given wire size range.