Properly Proportioned to Minimize Stress corrosion and Deterioration By Galvanic Action|Interlocking Fingers on connector body Halves prevent Mismatching, square Shank, hex Head, round Collar, high Strength galvanized steel bolt allows one or Two-Wrench Installation, also supplied Pre-Filled with PENETROX joint compound and Stripsealed|Multiple purpose parallel groove clamp made of high-strength, high-conductivity aluminum alloy|Hardware allows for one of two wrench installation|High conductivity, non copper bearing aluminum alloy, properly proportioned to minimize stress corrosion and deterioration by galvanic action|Interlocking fingers on connector body halves prevent mismatching|High-strength galvanized steel bolt allows one or two-wrench installation, also supplied pre-filled with PENETROX joint compound and strip sealed|Groove A - 1/0 - 4/0 AWG ACSR, 1/0 AWG stranded - 4/0 AWG stranded conductor range for aluminum/copper, 6201 and 5005|Groove B - 6 - 4/0 AWG ACSR, 1/0 AWG stranded - 4/0 AWG stranded conductor range aluminum/copper, 6201 and 5005