Smooth internal bushing protects conductorsThreaded for rigid conduit or IMCTapered threads (NPT)Die cast zinc bodyCopper free aluminum (less than 4/10 of 1%)To reduce the trade size of a taped hole or hub
Hubbell KillarkĀ® R-21 Reducing Bushing, 1/2 to 3/4 in Conduit, Copper Free Aluminum, Natural