UEW Enamel Wire, 2 Types, Polyurethane Copper Wire, 0.02 inches (0.65 mm), 17.6 oz (500 g), Approx. 50.6 ft (166 m), Heat Resistant 288°F (130°C), Excellent Heat and Chemical Resistance. Excellent induction properties in high frequencies. Urethane resin varnish is baked onto conductors. Note: Please note that this product is not 166.4 ft (500 m).