The Crouse-Hinds 451 Set-Screw Straight Connector Coupling is a high-quality electrical fitting designed for connecting Electrical Metallic Tubing (EMT) with a 3/4 inch diameter. Made of rigid steel material, this straight connector coupling provides a secure and reliable connection for electrical installations. The set-screw design ensures a rigid and inflexible coupling, ideal for providing support and stability in conduit and tubing systems. With the trusted Crouse-Hinds brand backing it, this new connector coupling is a durable and dependable choice for various industrial and commercial settings.