SIOCEN 2-Pack 10FT DC Power Extension Cable,5.5mm x 2.1mm 10ft, Black
However, not all such power adapter uses 2.1mm x 5.5mm barrel plug. 10 ft/3 m DC power extension cable, The length of the single extension cable is 10ft, you will get 2 pcs heavy duty 3m/10ft dc power extension cables.
