I ordered this stamp set and was skeptical of the quality at this price point. First impressions of the tool kit is that the all nylon rolled sheath seems a bit cheap but after using it I found the quality of the tool to be very strong metal. I have a 24 ounce Wilton ball hammer, notched punch and bit holder. I tested these punches and chisels on the head of a 5/8 grade 8 bolt. I used several different punches and chisels from the set, large and small, and tapped all the snot out of them. Aside from the missing green paint, none of the kits were damaged and all cut deeply into the bolt. Love this set would definitely recommend.