Calzone/Anvil Iron is our most extreme line of defense. It utilizes an extremely tough defensive HDPE covering over the plywood that provides additional protection to cases that are constantly on the go, and often subjected to forklift applications. The case wall is a custom laminated process that is composed of 1/8” high density solid core composite, precision bonded to top grade plywood, resulting in a case wall that is built to take abuse far exceeding traditional ABS cases. No other case company offers this level of protection.