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Mixed
Glyph
Basic icon element
danger, warning, safety
Black
512x512
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Flat
Anchor
Caution
IndianRed
128x128
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Krispicons- Modern Flat Icons Freebie
Attention, danger, Caution
Firebrick
111x111
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Simple darkcon
problem, warning, Caution
Smooth
Tango Icon Library
Battery, Caution
Handdrawn
Web Design Creatives
mark, Caution
DarkSlateGray
Caution, mark
Pixel
Twotiny
Gold
14x14