Mail hauberk, infantry grade 60" chest - code b. This code b hauberk is crafted in high tensile steel, and though Butted construction has less structural integrity than riveted mail this steel type will provide a sturdier mail garment than mild steel. Size: fits up to 54" chest size measured over a gambeson. Construction: Butted ring type: round wire. Material: 16Ga. High-tensile steel. Finish: zinc plated. Ring internal diameter: 8mm.