Our shield bosses are a practical, lightweight, attractive and consistent alternative to handmade bosses which are often less than perfect. The hemispherical width is a generous 14.4 cm. They feature a black textured surface made to resemble hammered, blackened iron. They are nice and deep for safety and to fit a variety of hand sizes. They are made of black high durometer santoprene, nearly indestructible. Use your own handle or use our made-to-fit perfectly black handle.