DT Swiss GRC 1100 DICUT 30 Front Wheel - 700 12 x100mm CenterLock BlackDT Swiss GRC 1100 DICUT 30 Front Wheel 700 12 x100mm CenterLock Black. The GRC 1100 DICUT gravel wheels are designed for multiple situations with two rim height options available to meet your needs. Whether youre on the hunt for a win in a fast paced gravel race with the 50mm high rim or looking to unhook yourself from your limitations on an extreme off road adventure with the 30mm high rim these wheels are sure to catch the eye while saving weight