These FTZ cable lugs, also known as starter lugs, are the best we could find, except for their heavy duty power lugs. They are made by a leading manufacturer of electrical components for transportation and industrial applications - connectors are their whole business. They are similar to Ancor Heavy Duty Marine lugs, made of 99.9% copper, with a substantial polished tin plating, and most importantly the pad is a seamless piece for strength, conductivity, and corrosion resistance. The lack of a seam is what sets them apart from the Ancor brand. And we sell them for much less!