** Extra Long Version of Std 105159 ** American Beauty Replacement Electrodes are a proprietary electrographite blend. There are a wide range of characteristics within the electrographite family, many offering excellent performance at high voltages, high current densities and long life. American Beauty Tools has invested heavily in both laboratory & field testing and believe our electrodes to be the best resistance soldering electrodes available on the market. Specific details regarding our engineered blend are a protected intellectual property.