Appleton Grounding Bushing, 2-1/2", Insulated, Threaded, Malleable Iron

2 1/2", Insulated Ground Bushing, Threaded Type, Bushing Material: Malleable Iron, Lug Material: Aluminum. Wire Size: 14 AWG (Solid) - 4 AWG (Stranded). For Copper or Aluminum Grounding.