These icons were done long time ago as someone request me, intend to use these icons to make Firefox's theme, but I think the roughness of icon made it hard to create theme.
So I release them here and hope that they should have any use for other. Maybe you can use them to create prototype of some interface, or school project, or...
They're PNG, but perhaps if you want to use it on your PC, just convert them online with --> [link]
Enjoy♥ Thanks for every comment
Question? Feel free to ask me. : )