Rigid Steel Nipples 1" X 2-1/2" - Rigid Nipples are Used with Rigid Coupling to Terminate Threaded Conduit to a Knockout, Box or Enclosure, where space is limited within the box.Rigid Steel Nipples 1" X 2-1/2" features include: Connect Threaded Rigid Conduit Zinc Plated Steel Concrete Tight Male Hub Thread (NPT) Order Qty of 1 = 1 Pieces Below is more info on our Rigid Steel Nipples 1" X 2-1/2"