Features:

Great for a temporary circuit that you don't want to solder.

Designed for Nano V3.0, it is a terminal expansion adapter, working very well for prototyping for Nano projects, you can use this adapter to easily hook up for Nano to an outside world via hook up wires, and It can be used in conjunction with or in place of a breadboard.

No soldering required, the boards are fully assembled, it provided a nice platform for wiring circuits for Arduino.

It is for Nano version 3.0, however you can still use this adapter for the older version (but remember that old version A0-A7 are in the reverse order).

Controller terminal adapter expansion board can connect a large number of digital lines for Arduino.

Size: about 2.21 x 1.65 x 0.50 inch (L* W* H)

Package Included:
3 x Terminal Adapter Expansion Boards for Nano