Programs: Photoshop, GIMP, PSP, and many more
This set of gears as transparent PNGs can be used in any program that will support *.PNG files. Photoshop, GIMP, PSP, and many more - even Microsoft Paint! Most of the images are fairly high resolution, with an average size around 1200 pixels.
Included are several gears on their own, put together, and also a group view from an angle. Great for your steampunk designs!
If you're interested in the images used to make the brushes themselves, I have an image pack for this set available for download on my website here: [link]