DC Power Supply Extension Cable 12V for CCTV Camera/DVR/PSU Lead 3m/5m/10/15/20m Universal interface DC Size: outer diameter 5.5MM inner diameter 2.1MM, most of the products on the market are universal this size. Mainly used for monitoring, adapters, routers, LED and other products above. Product details Wire specifications：OD3.0/3.5/4.0 copper wire 2 core 11 / 0.12 Plug specifications： DC5.5 × 2.1MM and other DC male and female head size specifications Environmental PVC material injection molding
eBay