Lower height, cup shaped center knobs with angled shoulder lugs provide low rolling resistance and grip in a wide variety of conditions Lower height, cup shaped center knobs with angled shoulder lugs provide low rolling resistance and grip in a wide variety of conditions Features a tread profile adopted from the previous version of the Racing Ralph provides an excellent front wheel choise when running different rear tires KGRD - K-Guard belting offers entry level puncture resistance LTSKN - LiteSkin - Have light, thin sidewalls. Advantages: Weight saving and reduced rolling resistance