You seem to be having the same sizing problem as the other reviewer. The male end should be tapered at the inside diameter. Only fits about half of the 5.5 x 2.1mm sockets I have. Not worth sending back so I just cut off the pin ends and solder on new ones that go with everything. I can confirm the 22 AWG stranded wires inside and they appear to be solid copper rather than copper clad aluminum.
Blink Outdoor Camera Wall Mount Bracket Set - 5-Pack Plastic Protective Housing and 360Β° Adjustable Mount with Blink Sync Module 2 Outlet Mount - for Enhanced Blink Outdoor Indoor Camera System (Black)
11 Review
π· D-Link Outdoor Security Spotlight WiFi Camera with Day and Night Vision, Built-In Smart Home Hub, Full HD Surveillance Network System (DCS-8630LH-US) in White
12 Review
Blink XT/XT2 Camera Wall Mount Bracket - 360Β° Adjustable for Indoor/Outdoor Use - 3 Pack
11 Review
Versatile Adjustable Wall Mount with Enhanced Security for Both Indoor and Outdoor Use
11 Review