Conduit Bushings with Insulated Throat Zinc Die Cast 3-1/2" - Conduit Bushings are Used with a Locknut to Terminate Threaded Rigid and IMC Conduit to a Box or Enclosure.Conduit Bushings with Insulated Throat Zinc Die Cast 3-1/2" features include: Used with a locknut to terminate threaded Rigid and IMC conduit to a box or enclosure Bushings rounded surface prevents damage to wire insulation during pulling Insulated Throat Zinc Die Cast cULus Listed Order Qty of 1 = 1 Piece Below is more info on our Conduit Bushings with Insulated Throat Zinc Die Cast 3-1/2"