Approximate 40cm long female pigtail cable to suit fairy and icicle lights that use the integrated plugpack/power supply/controller that are now common from retail shops.
Examples of the brands that use this style plugpack and lead are Bunnings Lytworx
The plugpack shown in the images are just shown as an example of the style that these leads are used for.
There is a bundle of 100 shown in the image/s. The price is for 1 only.