From Diamond:

Precise and designed to cut, and yet it's a boulder of strength. The Rock exhibits shorter draw lengths starting at 25" as well as a short and snappy axle-to axle length, making it extremely mobile and perfect for any occasion, whether in open spaces or a small blind. This bow is also set with a newly engineered single-cam system made for dazzling speeds. The Rock's forgiving brace height and adjustable draw-stop and let-off ranges ensure it will always be the perfect fit. Try The Rock on for size and learn what an "adrenaline rush" really is.