1.These non-metallic liquid tight connectors are suitable for indoor and outdoor applications such as cable connections, conduits to outlet boxes, motors and controllers, printing equipment, pumps, refrigeration equipment, high temperature refining and chemical industries, refrigeration equipment, HVAC equipment, machine tools, marine appliances, components, wire connections, pool and spa equipment motors, central air conditioning units, and a variety of other electrical enclosures and hubs. 2.The electrical conduit connector, Connector Type:3/4NPT; Size:57x42mm/2.24x1.65 inch (HDia); Suitable tube outer diameter:20.5mm/0.81 inch; Material:PVC; In the package of:48Pcs x Non-metallic Liquid-tight Connector(straight,180 degrees). 3.The liquid tight connectors are made of PVC, which is rust and corrosion-resistant and protects the cable. Not easy to deform and is sturdy for long-term use. Each connector comes with a sealing washer dome nut. It not only effectively prevents liquid leakage in the flexible conduit but is also waterproof. 4.Steps of installation: 1.Lose the dome nut; 2.Insert the conduit into the body; 3.Tighten the dome nut; 4.Connect the other end if needed.