Practice Works 2x chainrings with LevaTime are incomparable. This technology has been developed over the years, through intensive testing and continuous optimization, and now represents a class of its own when it comes to shifting precision and above all switching speed. The complex arrangement of climbing aids, cutouts, ramps and tooth shapes from the small to the chainring is precisely calculated and not coincidental. This way, the chain changes its position in a controlled and efficient way. LevaTime takes switching behavior to a new level - try it out and you'll see how different Praxis Works chainrings are.