3/4" Coupling Set-Screw Hex Style EMT Conduit 2 1/4” x 1/8” Thick Wall 1 ea 276M. This coupling set-screw is designed to connect two pieces of 3/4" EMT conduit securely. It is made of heavy-duty steel and has a silver finish, making it both durable and aesthetically pleasing. The hex bolt connection type ensures a strong and secure fit, and the thick wall of the coupling adds extra reinforcement. This accessory is perfect for those looking to add to their electrical metallic tubing setup. It is a stand-alone piece and can be used with rigid EMT for added flexibility. Made in the United States, this coupling set-screw is a reliable and high-quality choice for any electrical project.