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

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