NauticalMart Shield Boss Blackened Finish Diameter approx. 18,7 cm High approx. 5 cm Material : 14 Gauge steel Manufactured by Medieval Epic Shield boss This is a Hand Forged Heavy Gauge Iron 8" Small Close Combat Grade Functional Medieval Shield Boss Umbo Mount .It features a 8 inches in diameters and 6 pre-drilled holes. Products comes oiled for long term care and maintenance. Steel Umbo Boss Our Amazing Medieval Shield Boss A shield boss is a raised section, often made of metal, at the center of the shield with the purpose of deflecting blows away from the center of the shield. Medieval Boss Collectibles This Round Iron Shield Boss is perfect piece to mount on your own rounded shields. This shield boss consists of a circular sheet of metal with a round, raised bubble at the center that helps to deflect blows away, while also featuring six holes around the edge for mounting.