First things first: Real Vikings did not wear horned helmets. Real viking helmets were created for the protection of the head, not for a fashion display.
That being said, pop culture forever linked the mighty Viking warriors with hornedhelmets. They are everywhere, from cartoons to games and even movies, and will always be associated with the fabled Viking warrior.
Besides, they do look fierce.
The ring is made of 316L stainless steel, a nickel and molybdenum alloy known for its sturdiness and corrosion resistance.