-Ortho Arch Stainless Steel wire is manufactured of medical grade stainless steel materials, have smooth surfaces, accurate forms, and consistent forces to provide reduced friction and precise torque control. -Proper wire characteristics are key in achieving treatment goals. -All of Ortho Arch's Stainless Steel wires are diamond drawn to exacting tolerances guaranteed at +/- .0005". -Stringent quality control and testing assure our wire will maintain PSI rating batch after batch. -All arches are mid-line etched 3 marks for upper and 1 for lower. **For further product information, please contact Chat Support**