Nickel Titanium archwire with 30% reduced friction than traditional Niti wire! This specially designed Superelastic wire has an ultra smooth, hard, black oxide surface. Not a coating, but an integral part of the wire! Fully biocompatible, better resiliency, improved superelastic properties! NiTi Black archwires have a permanent Dimple centermark which prevents rotation of archwire beyond central brackets. The Dimple lies parallel to the gingival plane to provide optimal patient comfort.