This is the best framing hammer you can buy !!! They are a one piece forged unit with molded on shock proof handle and serrated  face.  I have several!!! I use the 28 oz. and my wife uses this one. They will last almost forever !!!! the handle is un-breakable!!!! The face will last for many years even when nailing very large nails.  These have very good balance and weight for swinging and driving large nails with the least amount of effort and swings per nail!!!  You can pull any nail that you get in the claw.  You can break the end of the claw or chip it.  This can be done only with improper use or extreme abuse.  We use the 220z and the 28 oz  for driving very large fence steeples when putting Up heavy fencing and welded wire panels.  BUY BUY BUY  this hammer!!!  There is only one  fault with this hammer!!!  People WILL steal them!!!!