these silver nitrate sticks are your go-to solution for versatile brazing tasks; With 20 copper brazing rods, each measuring about 19.69 inches, they fit perfectly into any toolkit, offering a reliable option for professionals and DIY enthusiasts dealing with copper and brass connections built for the HVAC tools , these silver solder sticks are indispensable for professionals in the air conditioning, refrigeration, and electrical industries; Their exceptional properties make them suitable for brazing copper and brass components efficiently crafted from quality metal alloy, these brazing rods boast a mix of 15% silver, 5% phosphorus, and 80% copper; This composition ensures excellent and tensile strength, making the silver solder ideal for creating seals in demanding environments designed to withstand substantial heat, these welding rods offer a solidus temperature of 1190°F and a liquid of 1480°F; This makes them the perfect solder stick for applications requiring high-temperature resilience, ensuring performance in intense conditions specifically engineered for cases with minimal gaps, these copper brazing rods that molten metal flows effortlessly into narrow spaces; Ideal for tasks, they are the preferred choice for anyone for impeccable results in small joint areas, Weight: 0.37699046802 pounds, Manufacturer: Nerzalie