First of all, this hammer will last you decades even with constant use. It's hard metal, but as advertised, you can spin 2x4 and your wrist won't go numb the next day. Made in the USA. For those who don't know what a frame hammer is, it's a hammer, but on the metal face there is a pattern in the form of honeycombs. This allows you to drive the nail in until the nail head penetrates the tree without affecting the tree itself. If you've ever seen someone pound the crap out of a 2x4 with a regular hammer and leave big hammer marks in the process, you know what I'm talking about. With carcass hammers you avoid this and only leave tiny pockmarks on the wood that are not very noticeable. Of course, the appearance of the frame doesn't matter since you'll be covering the frame with drywall and siding, but it also keeps the 2x4 intact without pushing it out. But most skeleton shooters use a skeleton pistol and know how to use it. Smooth surfaced hammer. I don't really know why all hammers are milled these days, I think it's because the pros use wireframe nailers. The milled surface is slowly leveled after use. If necessary, it can be crushed. like any steel tool.