TEMCo Pure Nickel Wire 28 Gauge 50 Ft non resistance AWG Ni200 Nickel 200&nbsp;ga 28 AWG, Average wire diameter: 0.0126 in. (0.32004 mm), 0.3778 Ohms/ft at 68F Nickel 200 (99.6% commercially pure). Rated for temperatures up to 1446C (2635F). 100% MADE IN THE U.S.A. All TEMCo wire is produced and spooled right here in the U.S.A. PERFECTLY TENSIONED. Zero elongation, scratches or other flaws ensure quality wire on every spool. ZERO CONTAMINANTS. Clean production environment houses the spooling process. Hands-off computerized spooling eliminates skin salts and oils.