This listing is for:
10 NAILS solid copper nails.   You can save more by selecting 2, 3, or 4 packs of 10 nails each. They are 1.75 inches long but like all these things vary slightly.  Nominally they are 1.75".

5D

Gauge 12

Thickness (diameter) is 0.1 inches.

Copper Nails approx. 1.75" long (from top of head to point.  
I have taken pictures of various measurements for your review.

Flat head measures approximately 1/4 in diameter (they are not perfectly round).

Smooth shank

Solid Copper

Made in the USA
Have had them for about 50 yrs- New-old, never used

Each lot of nails I list will be randomly selected from a bulk box. 

PLEASE NOTE THAT THERE IS VARIABILITY IN THE LENGTH OF EACH NAIL WITH THE AVERAGE OF 1.75" AS LISTED.

There are many uses for these copper nails:

Construction:  Roofs, tile and slate;  Copper flashing, water pipes and drains

Lawn & Garden:  Insert in a tree trunk to kill it.

Woodworking:  Want the look of a copper nail on your special project?

Upholstery & furniture:  Do you need copper nails to give your piece a unique style?

Arts & Crafts:  
Scientific:  Copper nails can be used for school projects and science fair experiments.  If you have special need for these let me know and I can perhaps provide you with what you need.

Copper nails are more ductile and corrosion resistant.  They don't snap and are not brittle and tend to bend rather than break off. Copper is also a very good conductor.