Just ask people what the round end of a ball peen is for. Few people know what peening is, fewer know how to do it, yet a ball peen hammer is still one of the m

Just ask people what the round end of a ball peen is for. Few people know what peening is, fewer know how to do it, yet a ball peen hammer is still one of the most common hammers around. It's competing against other specialized hammers and winning because people simply have it already.