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Mixed
Glyph
Material Core
refresh, Reload
Black
512x512
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Files & folders
AwesomeFolders
refresh, sync, Synchronize
Geomicons
refresh
UI
Typicons
FatiCons
494x512
Music & multimedia
Sound and Audio
refresh, Audio, repeat
Computer & hardware
Ionicons
Empty, refresh
Pictype Free Vector Icons
sync, refresh, Reload
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Business & finance
48x48 Free Time Icons
Undo, refresh, round
48x48
Synchronize, repeat, Flip
Windows Metro
Free Mobile Icon Kit
Key, refresh
64x64
Picol Vector
Glyph set
refresh, delete, Reload
160x160