This wire serves as a fantastic intermediary wire between Ni-Ti and stainless steel. Some orthodontists will use this wire starting up in the middle of procedure even though other orthodontists don't use such a wire in the least. The composition in the wire has 55% Nickel and forty five% Titanium. https://macrobookmarks.com/story19033913/round-steel-wire-things-to-know-before-you-buy