"This very useful set is comprised of 22 social icons in vector mask layers on one practical psd. The vector icons are crafted in perfect pixel from 12x12 to 32x32 px. Those are ideal to use as a base to create custom icons to your liking using effect layers such as drop shadow, gradient overlay, inner shadow."
12px x 12px
16px x 16px
24px x 24px
32px x 32px
"They also come as PNGs if you'd like to use them as is."