# Reversal Bars

Reversal bars is a volatility-based chart type that builds a new bars after the price passes a specified amount of ticks in the opposite (reversal) direction.

![](https://4186075531-files.gitbook.io/~/files/v0/b/gitbook-legacy-files/o/assets%2F-LD6FsRvQ3jgwJIg6O7r%2F-MYG3ahPwYwq0tPh0oXe%2F-MYG7OCVL-oclduhMnrc%2Fimage.png?alt=media\&token=4f4c0fc8-5151-4755-9925-e49d9d934ad7)

## How do Reversal Bars is constructed?

There are two parameters that are involved in the calculations:

* **Length** is the minimum bar size after which a pullback can be counted.
* **Reversal Length** is the minimum size of pullback (reversal) after which the bar will be fixed and a new one starts to build.