Cable and Rigid Conduit Sealing Bushing, Conduit Size 3 Inch, Wire Size (1) 1.89 Inch/(2) 1.26 Inch/(3) 1.13 Inch/(4) 0.96 Inch, Diameter 4-1/8 Inch, Material Slotted PVC Coated Steel (Disc), Neoprene (Sealing Ring), Stainless Steel (Socket Head Cap Screw/Washer), Approval UL E-11857, Conduit Inner Diameter 3.068 Inch