Yoeleo SAT C50 STD Clincher Carbon Wheels for Cycling Quick Release Road Bike Carbon Wheelset for Shimano 11S Special Assembly Technology (SAT) increases 30% wheels strength and 10% inflation capacity,provides better durability & brake ability Basalt brake surface has good heat-insulation qualities and high thermal durability,best brake effect can be achieved by using YOELEO ceramic fiber brake pads supplied with our carbon wheels Hand built setup gives stiffest wheels condition and lasting performance, fit for both training and racing Novatec hubs offers smooth and fast rolling; Wider U shaped carbon wheels achieve best performance in crosswinds and cornering YOELEO Carbon Wheels meet EN Standard (SGS TEST No.:GZHG1501000192BC),with 1 year warranty guarantee under normal usage