54 Insulated plastic bushing features polypropylene construction and offers smooth well-rounded bearing surface for wires or cables. It measures 3.31-Inch Dia x 0.63-Inch. This bushing with threaded connection, has trade size of 2-1/2-inches. It withstands temperature rating of 105 deg C. This bushing is ideal for threaded rigid conduit and IMC. Bushing is UL listed and CSA certified.