Motion Note: Blood Orange Alpines are quick-rolling, controllable downhill wheels. 78a is for taking on rough roads, or crazier corners requiring more speed control than usual. These will be the grippiest of the Alpine series, as well as the quickest wearing. Still, the big core gives the wheel tons of support, minimizes deformation, creates a more even wear pattern and puts your setup on the turbo booster super fast setting. The sharp lips and core size combine with the urethane to create a grip-to-slip ratio that's very apparent, and easy to stay on top of. All in all, skaters from the inexperienced, to the most knowledgeable, will love Alpines.