Contains 1/4 lb. silver bearing, solid core, lead-free solder with 96% tin, 4% silver composition and 430 F (degrees Fahrenheit melting range. Works as easily as 50 tin/50 lead solder with exactly the same soldering technique. 1.7 oz. No. 95 lead-free tinning flux is formulated to clean, flux, and pre-tin all metals except aluminum. Includes applicator brush and sand cloth.