4" Conduit Hanger with Bolt - Secures EMT or Rigid Conduit to any mounting surface, Threaded Rod or Insulated Supports.4" Conduit Hanger with Bolt features include: Secures EMT or Rigid Conduit to any mounting surface, Threaded Rod or Insulated Supports Zinc Plated Steel Hardware Included cULus Listed Order Qty of 25 = 25 Pieces Below is more info on our 4" Conduit Hanger with Bolt