A unique blend of 62% tin, 36% lead and 2% silver alloy with a rosin flux core. The .020 diameter is well-suited for reaching tight spaces. Low melting point of 354-372°F 179-189°C makes it ideal for temperature-sensitive components. Includes dispenser tube.WARNING: This product can expose you to chemicals including LEAD, which is known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov