Its anodised alluminium. I just seent them the pic you can see behind the plate with the textand numbers I wanted. No materials.
I copied the out line from some where, maybe from here and just filled in my own numbers in Ms paint.
I was expecting a plain plate with the text engraved into it. I got what you see which is the whole thing cnc engraved. Took about 10 days. It just looks more profesional than my stamped effort.