This product is an additional service:

If you order an MK2/MK3e you can add this service in case you want soldered pins.

What you get is:

Presoldered pins on your MK2/MK3 - so you don't have to solder them yourself, in more detail:

2 x 13 straight male pins on either side of your MKx

1 x 6 right angle male pins for the FTDI connection