Bonus Hammer. I saw this because all the punch pens seem to be of decent quality. I used 3/32" to disassemble a Glock pistol and the whole kit was a bit more expensive than a tool sold for firearm use. The pins themselves are well machined and were all just the right width. They will pierce leather, cardboard, aluminum sheets etc. no problem The hammer itself is fine The handle wasn't perfectly aligned so if you don't know you may not be able to hit center. Also, it may have some bare spots on the head and can rust more easily than other parts, so I consider it a hammer drill set with an extra hammer, overall I'm happy with the set.