ROCKBROS T700 Carbon Fiber Bike Wheels 700c 55 mm Disc Brake WheelsetLIGHTWEIGHT T700 CARBON FIBER: Our bike wheels are made of lightweight T700 carbon fiber, which optimizes the force structure of the rim and ensures performance while being lighter in weight, with the 55mm disc brake model weighing only 1. 45g. The lighter carbon wheelsets reduce air resistance and facilitate acceleration. 2: 1 SPOKES: The road bike wheels designed with 2: 1 spokes technology with excellent durability and aerodynamic performance,