Topaz’s compression type steel constructed EMT connectors offer ease of use and provide a secure, concrete tight joining of thin wall EMT conduit. Models with insulated throat provide additional protection against abrasion. Assemblies include a zinc plated steel locknut. All models available in sizes from 1/2” to 4”; fabricated from strong, resilient steel with a zinc plated finish to ensure mechanical protection; UL listed. NEMA/ANSI FB-1 compliant.