Junction box is waterproof or weatherproof, it protects connectors from being rusted or oxy-genated.
Prevent cables being cut and protect the wiring, Quantity: 10 Nos/Pcs, Ideal use for 10 Camera System
Provide an easy way to mount/install security camera, Dimension: 4 x 4 Inch, Material: Fiber
Brace Screw Holes: If repeatedly open and close screw still it’s screw holes fitting would not be loose
See the picture for Junction Box Installation Example