PNG ICO ICNS MORE
Business & finance
Glyph
48x48 Free Time Icons
anxiety, Alert, hospital
Red
48x48
warning, Alert, Hand
PNG MORE
24x24 Free Application Icons
Error, sign, Blocked
24x24
Desktop apps
3D
Free Applications Icons
Hand, Block, stop
Pixel
Splashyfish
Error, Attention, exclamation
16x16