The THOMAS & BETTS part 54139UB is a high-quality Lug Terminal designed for 4AWG Copper Tin wire. This terminal is expertly crafted to provide optimal conductivity and durability for secure electrical connections. It features a tin-plated copper construction, offering superior corrosion resistance and ensuring long-lasting performance. With its compact design and easy installation, this Lug Terminal is an ideal choice for various applications in electrical installations. Trust THOMAS & BETTS for reliable and efficient electrical solutions.