Detailed Product Description trade size: 1/2", 3/4", 1", 1-1/4", 1-1/2", 2", 2-1/2", 3", 3-1/2", 4"material: Zinc die casting1) Manufactured to UL514B specifications 2) Used with a lock nut to terminate rigid and IMC conduit to a box or enclosure and to provide a smooth pulling surface. Plastic insuliner prevents damage to wire insulation.For more products catalog please contact our company.