Hi ausfire. Not sure how to post a picture, but I will tell you about the nail header. First off, I obviously should've asked questions and got details before placing my bid. HaHa. This thing is massive. More a spike header than a nail header. The only measurements listed were 12 1/" long and 3 lbs. That should have been enough to tip me off, but I guess i was blinded by my want of an vintage nail header. Anyway, it's dog bone shaped, with a circular section on each end about 1/8" taller than the rest of the body of the tool. On one end, the top square hole is about 1/2" on top, 9/16" on bottom. On the other end, it's 9/16" on top and 5/8" on bottom. The ends where the square holes are punched are about 2" across and 3/4" thick. It's a nice header I suppose. Heavy duty for sure. More than I need though, so back on eBay it will go I suppose. Lesson learned.