3MCompression Lugs (40016) from the Scotchlok™ brand are gray in color and made of aluminum. They have an overall length of 2.28 inches (57.9 mm) and a barrel length of 0.75 inches (19.1 mm). These compression lugs have a standard barrel style, one hole connector description, and are suitable for use with aluminum or copper conductors. They can accommodate a maximum conductor size of 6 AWG (16 mm²) and have a maximum operating voltage of 35 Kilovolts. The lug is compatible with 5/16 inch stud sizes and has an inner diameter of 0.2 inches (5.1 mm) and an outer diameter of 0.34 inches. Each case contains 50 compression lugs. The center of the hole to the end of the pad is 0.44 inch (11.2 mm) and the pad length is 0.88 inches (22.3 mm). - 7100024099