In the past I had only pinned razors with copper/brass? rod and used brass washers. The wire cutters that I have worked fine since the rod was fairly soft.

Recently I repinned something with chrome rod and washers and the cutters I was using deformed the end of the rod enough that it was hard to get though the holes and it was hard to get the small washers on.

I got the job done on that one but I now recall reading about a better type of wire cutter that doesn't deform the rod. What is that called so I'll know what to look for at the hardware store?