Cooper Crouse-Hinds 661S EMT Compression Coupling is a steel connector designed to join two 3/4 inch EMT conduit runs. This compression-type fitting grips the conduit bodies to create a secure, screwless splice that maintains continuity in metal electrical conduit systems. The model number 661S identifies this unit from Cooper Crouse-Hinds, a well-known manufacturer of metal conduit fittings used in commercial and industrial electrical installations. Built from steel, the 661S provides durability for 3/4 in EMT installations where a reliable, long-lasting connection between conduit sections is required.
