Headless Pin Finish Nails are for trim and fine finishing work. Because pin finish nails are so short and narrow, it makes it hard for them to split wood, which means they're good for use with delicate pieces.
Wire Nails
Wire Nails
Similar to a wire brad, Wire Nails have similar dimensions with a bigger head. The head sinks into the surface of most woods giving a smooth, finished appearance. These nails are commonly used in carpentry applications where the nail head needs to be unobtrusive.