The new insulated TL Series Threadless Grounding Bushings for grounding and bonding unthreaded Rigid/IMC conduit have a plastic liner that protects insulated conductors from abrasion during pulling or due to mechanical vibration. The new bushings, made of a malleable iron, zinc-plated body, are designed with a tin-plated lay-in lug that allows for easy installation and alignment of AL/CU conductors where the raceway is required to be grounded. They are available in sizes ½-inch through 4-inches with multiple lug options and meet the requirements of NEC Article 250.92 for bonding of equipment services and NEC 250.97 for circuits rated over 250V, and are cULus Listed.