This Pióro z atramentem icon is made in Material Design style developed by Google. This style is based on extremely simplified shapes, thin two-pixel lines, and is optimized for 24x24 px. Unlike other vector icon packs that have merely hundreds of icons, this icon pack contains 4,300 icons, all in the same style and quality.
The icon is of a quill with ink. The quill is shaped like a feather with a straight vertical line up the middle and a horizontal line at the bottom. The ink is shaped like a square with rounded corners.