Contains 1/4 lb. silver bearing lead-free, solid core, .117 In. gauge solder with 96% tin, 4% silver composition and 430 F (degrees Fahrenheit) melting range. Works as easily as 50TW/50 lead solder with exactly the same soldering technique. 1.7 oz. H-2095 water soluble tinning flux is formulated to clean, flux, and pre-tin all metals except aluminum. Includes applicator brush and sand cloth.