![Staple nails](https://www.nail.eu.com/out/pictures/generated/category/thumb/748_150_75/clous-rivierre-conduit-crampillon-cavalier-c.jpg)
Staples: conduits and staple pins
Commonly referred to as "staples" because they are fixed by straddling the item to be fastened, conduits and staple pins are U-shaped curved nails, with a point on each side.
Conduits: the tips are straight
Staple pins: the tips are beveled
In common use, they are used to secure fence wires or barbed wires to wooden posts.