Fulcrum Racing Zero Carbon CMPTZN DB Rear Wheel - 700 12 x 142mm Center-Lock XDR BLKFulcrum Racing Zero Carbon CMPTZN DB Rear Wheel 700 12 x 142mm Center Lock XDR Black. Racing Zero Carbon CMPTZ DB wheels set the benchmark for style and performance balanced with high quality materials and design. 30 mm high profile unidirectional carbon rim with ARC TECHNOLOGY reinforcements at the most critical points wthin the wheel 19 mm internal width and 2 Way Fit technology for clincher or tubeless set ups CULT bearings for unparalleled