Manufactured from high strength 6061-T6 aluminum alloy. Electro-tin plated. UL 467 Listed for grounding and bonding. UL File E34440. SGB-4 and SGB-5 UL 2703 Recognized. UL File E354420. Green color, universal to identify ground aids in visual inspection. Stainless steel hardware for corrosion resistance, greater torque and ease of installation. Serrations in conductor wire way cuts oxidation. Lay-in feature. Suitable for use with either copper or aluminum.