Hand forged from super heavy duty 12 gauge iron, this premium shield umbo (or shield boss) features six holes for mounting. Measuring 8 inches across and protruding approximately 2 inches, this umbo is great at deflecting blows as they simply glance off and makes a perfect addition to any round shield. The holes also double as mounts for the shields grip. Product comes oiled for long term care and maintenance. Diameter is 8 Inches. Weight is 1.8 Lbs. Mounting Holes: 6.