
I bought these to stamp codes on brass keys and they work great. The stamps are well made, coated with a thin layer of oil to prevent rusting and square cut. They match my HPC SA-7 Alignment Tool perfectly which is what I was really hoping for. I used a light tap with a 3 pound hammer to do a test hit and each letter was clear and perfectly formed. I wasn't sure how they would work but decided to give them a try before spending $60-80 on a set of HPC or Young Bros stamps. I'm glad I did;

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