O-Z/Gedney malleable iron bushings incorporate a thermoplastic insulator and an aluminum lay-in lug grounding lugThey are used to protect wires and cables at entry and exit of conduit and to provide for grounding of the conduitInsulating liner material is UL V-O rated (self-extinguishing)The plastic liner is tough, it won't chip, crack, swell or shrink, resists corrosion, chemicals and temperature extremesSurface friction is so low that wires can be pulled with virtually no abrasion on the cable insulationSetscrew provided with each fitting locks bushing in any desired positionUL listed for use with copper or aluminum grounding conductorsLugs not sold separatelyZinc plated clamping screw and set screws, tin plated lug finish