Instruction: Given a question and its related document, determine if the question is answerable by analyzing the information in the document. Output yes if the document addresses the question, or no otherwise.

Input:
Question: I need to cut half inch diameter circles in leather. But I have never used a punch. Do I need a hammer?
Document: I've used these punches for a couple of different projects - First was punching through 1/16&#34; vinyl mat with the smallest punch. Worked perfectly, although you really do need a proper striking surface. I used a sheet of plastic. Second job was cutting various size holes in some gasket material, again had no issues. The cutting edges on these punches are not fantastic, and if I had to cut through something tough like leather I would probably resharpen them first.
They were solidly made, but they didn't cut through leather! I had another punch, an army surplus punch, that worked great on the same piece of leather. These barely left a dent. I really hit the hammer HARD, many times, and left a big dent in the wood below, but not a scratch on the leather...
First off, these punches are not sized in Imperial measure, they are metric. So if you are looking for something exactly 1/2 inch....1/4 inch, etc. you are out of luck. If you drill a half inch hole to insert a half inch punch item you are making it is going to fit loose and look like crap.
I use several of the punches to create circles of card, plastic, leather and cloth stock for one of my hobbies. The punches cut cleanly and make good fitting circles. I've recommended the set to several fellow hobbyists.
I have had it for more than a month and have used the size 3/8&#34; once. It is sharp and punches through an eighth inch leather fine. Material and finishes appear more than acceptable for the price. I bought the punches and not the pouch. I say that because I am ok with throwing the pouch away.
These punches were not nearly as sharp as I expected them to be. Sturdy enough to whack with a hammer, but not sharp enough to cut easily through leather or other materials.
Punches excellent. Better than old Tandy Leather ones.Minimal effort to cut through 1/4 inch belt leather.Pouch good only to keep punches from rolling around in shipping box. This was reported in other reviews.I wasn't buying a pouch, but the punches, so it wasn't a problem for me. I will make a leather roll up pouch.If you want top grade sharp punches, it is a bargain. If a fancy carrying case is high priority, look elsewhere.
Used the punch set the same day it arrived. Works great.The only negative is the zipper pouch they came in. The zipperwas not attached on half the pouch. Like they forgot tosew that side. For an inexpensive punch set, they do a greatjob..........
I like the sizes provided,  especially the 9/16 inch one. The price is very good. However, after a few punches on thin magnet strips, the punch is showing quite a bit of wear (unlike the arch punches I used for quite a long period).
It works OK. The tools are exactly the quality you are paying for.Will do the job but, in my case, the thicker punch came with the cutting edge not round.It was hit during shipping and lacking enough protective material damaged it. The circles it cut are not round completely.To the seller... please protect well this tools when sending out by properly using enough protective material. I know, they are cheap but we are expecting a little respect in protecting our purchases.R
Answer: yes