Stainless steel, so you know they won’t rust. I like the fact they are black oxide too, so the color will last. Thick, so they securely screw to the back plate. Funny, because they’re stainless steel they kept falling off my magnetic screwdriver bit, which I’m not used to. Recommended.

Black Oxide Stainless Steel Screw Kit

They modified my order to include what I needed and not what would normally be shipped. I expected to have problems but they shipped all items perfectly.