4pcs/pack1m/3.28ft White 5.5mm x 2.5mm DC Plug Extension Cable DC Extension Cable Cord with Male to Female 5.5mm x 2.5mm Connectors DC Power 12V 5.5mm x 2.5mm Barrel Male Plug Connector

The media could not be loaded.  This product doesn’t match with the adaptor. I ordered 16 and only 3 are matching with adapter and the others never get in.I need to use this tomorrow and it mess up all my plan.

This extension cord with the 5.5mm diameter plug has the 2.5mm opening which perfectly fits the 2.5mm central + terminal of my telescope focuser; I will now be able to run the telescope and focuser in a much more controlled fashion and am impressed by the quality of the cord. What tops it off is that I now have 4 cords for the same price I would have been glad to pay for one!