The 70mm ZigZag is a wide offset wheel with our small 7-11 core. By definition ZigZags and BigZigs are have OffSet (OS) bearing seats while Centrax are wider, symmetrical, and have a CenterSet (CS) bearing seat. These Reflex formula ZigZags have dominated Slalom and Tight Slalom racing scene because their nimble and responsive nature. They are easy to pump up to speed and change direction easily. They provide the perfect balance of quickness, speed, and traction. ZigZags are a great all-around longboard wheel, and are excellent for carving, cruising, and LDP as well.