There is two vertical lines of equal length. At the middle point of each vertical line is a horizontal line with an arrow head at the end going opposite directions.
This Divider 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 5,700 icons, all in the same style and quality.