Favorite of road and cyclocross pros because of its light weight and dependabilityDesigned using SRAM Exogram technology and optimized using Zipp`s clamping system for adjustability, security, and ease of useAvailable in 27.2 and 31.6mm widths in 400mm lengthCompatible with Zipp`s SL Speed DI2 internal battery mount (sold separately)31.6mm400mmCrbn/M-BlkCrbn0mmUPC/EAN/GTIN: 710845861963