Topaz EMT connectors with set screw type assembly provide secure concrete tight protection when taped. Applications include use in dry locations to bond EMT thin wall conduits to electrical boxes or enclosures; set screw connectors offer superior corrosion resistance. Suitable for both EMT and rigid conduit. Constructed of durable zinc die cast, efficient and long lasting; UL listed. NEMA/ANSI FB-1 compliant.