Review on 📏 Versatile Thin Parallel Bar Set - 10 Pairs, 1/8" X 6" for Precision Work and Measurement by Andrew Agarwal

I think I made a mistake in the purchase. All parallels appear to have been processed as an assembly. I had to use a brass hammer to get some of them to slide and I noticed that the brass was splitting the steel parallels. How does brass harden steel? The larger ones have two screws, and one of the two in both was so seized that I couldn't turn it without removing the screw heads. They're relatively cheap, but I still don't think they're worth what I paid. I'm not really looking forward to it but I think I have to try to give it back.