Product Features:Premium high strength acid flux cored silver bearing solder6 percent silver contentStays bright and hardNontoxicJoint strength up to 20,000 PSI tensile strengthSize: 1/16 inchWeight: .9 oz.Working Temperature: 431 degrees F (221.7 degrees C)Application Temperature: 400 to 700 degrees Fahrenheit (204 to 371 degrees Celsius)