History has provided us with a variety of protective head gear. Helm and helmet styles range from simple to complex. Some work as a cap that sit atop the head, and others encase the entire head. Headpieces are built from head casts and measurements, which include the padding that will be wore underneath. The designs are based on both the customer's specifications and on which fighting group the headpieces will be used in. They are typically built from 4130 chro-moly Spring Steel and heat-treated in the shop. Each piece is then tested with a two-pound ax before being shipped.