Features:2 9/16IN Dia X 5 1/16IN Length, 1 In Thread Length, Concretetight, Standard:Ul 514B, Csa C22.2, Nema FB-1, Size:4IN, Connection:Male NPS Thread, Material:Steel, Finish:Zinc Electro Plated, Insulation:Insulated Throat, Temperature Rating:90ce