Grounding bar with tin plating 1/4"X2"X10", 10 pairs lugs1/4"X2"X12", 13 pairs lugs1/4"X2"X20", 46 pairs lugs...Our ground bars are made of T2 copper, with tin plating for protection, insulators and mounting brackets all included. We can design and produce based on customer requrements. Tin Plating Grounding Bus Bar