Model: 38mm, 1340g( front: 600g, rear: 740g) sharp: 700CC, tubular, matt, 3K Powerway R13 hub Pilar AERO PSR1432 spoke High quality and reasonable price CE certificate and 1year warranty only on the rims, 2year warranty on the frames. Carbon composite technology: from traditional airbag to foam smooth technology Miobikes-Procarbon wheel Builder