-American Orthodontics Stainless Steel arches are made from the highest quality vacuum-remelted 304V stainless steel alloy. This ensures a pure, inclusion-free arch wire, with superior tensile strength and less brittleness. -Features: -Forged from highest quality medical grade steel. -Strict corner-radius and torque controls ensure optimal wire to bracket interaction. -Stress relieved for superior tensile strength with less brittleness. -Gold Coated aesthetic wire plated with 24 karat gold. -Gold Tone™ heat treated to slightly higher tensile strength. **For further product information, please contact Chat Support**