Square D 4-Terminal QO & Homeline Ground Bar Kit is designed to work seamlessly with Square D load centers, CSED devices, and NQOD and NF panel boards. This ground bar kit a convenient and reliable solution for establishing grounding connections in various electrical systems. It accommodates multiple wire sizes, including 4 to #4 copper wire, 2 to #4 aluminum wire, 4 to 2 copper wire, and 2 to 0 aluminum wire, providing versatility for different wiring configurations. This essential kit ensures proper grounding and enhances safety in electrical installations, making it a dependable choice for both residential and commercial applications. Model Number: PK4GTACP