Designed for Nano V3.0: The item is a terminal expansion adapter, working very well for prototyping for Nano projects

No soldering required. Size is about 2.21" x 1.65" x 0.50" (L* W* H)

It lables for Nano version 3.0, however you can still use this adapter for the older version (just have to remember that A0-A7 are in the reverse order).

Package Included: 6x for Nano Terminal Adapter Expansion Boards

You can use this adapter to easily hook up for Nano to an outside world via hook up wires

It is the latest edition, but you can still use this adapter for older versions. (Just think of A0 minus A7 in reverse order.) Practicality: suitable for Nano V3.0.