Ergon Bar Tape ORTHOCELL® Road Allroad Black Leadout Sports External rim width (mm): 33 Size:XL External rim width (mm): 33 offering precise power measurement on the left sideOver 400 hours of operating time ensures long lasting performance on extended ridesUtilizes ANT+ and Bluetooth protocols for seamless connectivity with a wide range of devicesCompatible with SRAM Wide DUB inner bearings for optimal performance and durabilityConstructed with an aluminium axle and carbon crank arms for a lightweight yet sturdy buildExceptional measurement accuracy of 1 Optimum feel and enhanced grip with a tactile 3 mm thick for cushioned damping and supportive material rebound