Look for heirloom files. They usually have wing needle in them somewhere. Not ALL heirloom now! But if it looks like tiny little holes in it with thread around it, it's usually done with the wing needle.

Old Dummy here asking questions again, what the heck is a wing needle? And what is it used for?

Your sewing machine probably has stitches that are ideal for the use of the wing needle. Look in your handbook for the sewing machine. As gerrvb said they will most likely be referred to as heirloom stitches.

Wing needle will look great on the hem of a piece of linen or cotton. It can be made to look like 'old fashioned' pin-stitch or similar on the hem. Has other applications in needlework, and leaves small holes as in pulled thread work.

Like the others I have used a wing needle for what are called 'open seams' in the Netherlands, the well-known heirloom stitches, and I like the results.

But wing needles are sometimes used in machine embroidery as well. Husqvarna has a couple of cards, a.o. # 193 and I suppose they are not the only ones.
I never tried one of those, so I don't know how they stitch out. I did try and digitise a couple of test designs especially for a wing needle (for part of the design) but I'm not quite satisfied with them: the tension needs adjusting and I have yet to figure out how I'll do that.

I love learning.....this is such a great site to come to, to learn......thanks so very much.

This site has 3 pages of freebies there are 2 wing needle designs on page 3

Don't feel bad I have never used a wing needle because I do not know how.
Lenamae