Extra Reinforced Single Strand NICKEL FREE, Titanium flat metal ribbon with increased interproximal strength, is ideal for semi permanent splinting and maintaining difficult extraction sites.  Differs from Retanium (Original) in size.  Made from a single flat .027 x .016 Titanium Molybdenum wire.  Nickel Free (safe for nickel sensitive patients). Easy to form and comfortable for the patient. Reduced wear rate. Increased interproximal strength.MRI Compatible.Pack of 10 - 6 inch wires.