Tis connector tip's female side looks like this:
How to use this connector tip? This connector's rear is a 5.5 x 2.5mm female jack:
It can plug to a 5.5 x 2.5mm connector to form a new size connector:
Above pictures are just for understanding how the connector tip works. Actual connector tip may be different from the connector tip shown in pictures.
Important Note*: If your original connector is not a 5.5 x 2.5mm connector, you can not use this connector plug tip.If you are using this connector tip with some of universal batteries or power adapters, you need to find the 5.5 x 2.5mm standard connector tip that comes with the batteries or power adapters first, and plug it onto the battery or power adapter output cord, to form a standard 5.5 x 2.5mm connector, then
plug this connector tip to the 5.5 x 2.5mm connector to form a new size connector. 
