ASI 3001010 Nylon/Plastic Cable Gland, Strain Relief Cord Grip, Type 1900.07, PG7 Threads, 15 mm Nut, 3.5 mm to 7 mm Clamping Range (Pack of 100): Amazon.com: Industrial & Scientific
OhLectric Multi Cable Connector - Black Insulated Multi-tap Connector - 3 Wire Ports of 1.60" X 1.50"- Single Side Entry - Pre-Filled with Oxide Inhibitor - Accept Wires Range From 2-14” - Amazon.com
Amazon.com: Camco Power Grip 50-Foot Extension Cord Reel with USB Charging Ports | Provides an Extended Length to Power Your Equipment and Devices | Features Multiple Built-in Power Outlets (55291) : Everything Else