Item D18-38, weight 400g, ERD 569mm. This road 38mm deep bicycle disc brake wheel rim is 25mm width, wide u shape rim profile offered improved aerodynamics, and toray T800 carbon be used to make this rim stronger, lighter and stiffer for road disc brake wheels.
Item D18-45, weight 430g, ERD 555mm. U aerodynamic shape profile and 25mm track width makes this 700c road clincher rim better handling on corners and descents, durable for a variety of terrain. It is your best choice for a light road disc brake wheel.