Sigma Electric ProConnex 43382 Rigid Insulated Metallic Grounding Bushing with Lay-in Lug 3/4-Inch, 1-Pack Provides smooth surface to prevent damage to the wire when pulling Provideds a means of grounding with lay-in lug for easy attachment of grounding wire For use with 3/4-in Rigid conduit or IMC and wire range #14 - #4 Zinc die-cast construction with aluminum lug Product is UL and CSA listed