Scotchlok™ Compression Lugs (31156) are long barrel connectors made of copper. With an overall length of 5.75 inches (146.1mm), they have a red color and can accommodate a maximum conductor size of 350 kcmil. These lugs, belonging to the 31000 series, have a two-hole design and are suitable for use with copper conductors only. They come in a package of 10 and are compatible with a 1/2 inch stud size. The center of hole-to-center of hole distance is 1.75 inches (44.5mm). - 7000031409