Application: Used with a locknut to terminate threaded rigid and imcconduit to a box or enclosure and to provide a smooth pulling surface. Thermoplastic liner prevents damage to wire insulation. Liner rated at 150c.. Features: The plastic liner wont chip, crack, swell or shrink. It resists corrosion, chemicals, and temperature extremes. Standard material: Malleable iron Standard finish: Zinc plated Certification: ul listed.