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Mixed
3D
Bokbokstars 121 Classic Stock Icons
Error, red, waving icon
Black
512x512
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Signs & symbols
Free 3d Glossy Interface Icon Set
Attention, Error, cautious
64x64
warning, danger, Alert
erase, err, reject
Prompt, danger, exclamation
stop, remove, Error
Prompt, help, danger
UI
Gloss Basic Icons
Error, bookmarks
32x32
Message, Error
trashcan, Full, Error
Error, Female, user
user, Error, male
Business & finance
Refresh CL
Error, network, drive
256x256
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Desktop apps
Free Applications Icons
Alert, hanger, warning
24x24
Computer & hardware
Human o2
Error, network
128x128
poison, Error, Print