5340-050U 4/0 GA Universal Flag Clamp Quick Compression Connector (50 PCS) - Ideal for field repairs and custom cables these Quick Compression connectors are made of cast copper alloy, then are tin plated for added conductivity and corrosion resistance. All clamps, lugs, compression nuts and fasteners are tin plated. Compression nuts are color coded to QuickCable cables for easy size identification. Made of cast copper alloy, tin plated for added conductivity and corrosion resistance,All clamps, lugs, compression nuts, and fasteners are tin plated,Compression nuts color-coded making identification easy,Fasteners included,Made in the U.S.A