On the one hand, the design of this hammer is the worst I've seen and I have a complaint about anyone who, for any reason, takes "peen" as "pein" writes " (but that's more of a personal issue. ;) With another . . . it still works great like a hammer and the weight is right. In terms of specificity, it looks like someone has metal in one Cloth bag cast in the fuzzy shape of a ball head hammer and then, once hardened, finished to the required finishes.. The beveled edge around the flat part ofβ¦