The vapor model mounts are not steel, they are aluminum. - Warne Vapor Scope Mount for Marlin Lever Action 336, 1894, 1895

As I said, in the title: these bases are not manufactured out of steel; they are made from aluminum. This manufacturer does produce bases made from steel that look just like these, but they are not the same and cost substantially more. I gave the product a rating of four stars because the description is not accurate.

These bases are very well made and install without any surprises.