The Rock Hawk from CST features an aggressive tread pattern with large, well-spaced lugs. This spacing allows the tire to shed mud and other debris on mountain bike trails with varying conditions. In order to help reduce rolling resistance, the center knobs have been ramped. Folding models feature 60tpi, EPS puncture protection and dual compound. Wire models feature 27tpi and single compound. 845g (26x2.25 folding), 949g (26x2.25 wire).