These easy-to-use rods are useful for multiple tasks including soldering or repairing aluminum windows, doors, gutters and siding, and even sealing holes in boats. With a low working temperature of 720 F to 750 F, these rods can also be used to build-up aluminum joints without distortion, discoloration, or loss of strength. Tensil strength of 33,000 psi. Includes two rods.