Works as described. I like that they are durable and don't scratch. I LOVE that they are black and not the typical chrome.
Pros
Material: In order to offer you high quality products, these M12x1.25 nuts are made of cold forged and heat treated carbon steel for increased rigidity and durability, electrophoretically painted black for rust resistance. 72 hour salt spray test for corrosion resistance. The color will not fall off easily with normal use.