Lightweight and very durable, laterally stiff but vertically compliant. The double-butted spokes contribute to the weight reduction while making the wheel more responsive. These spokes also have a patented elliptical shape that can save 5 watts for added efficiency. Improved UST Road delivers more speed, comfort and control in an easy to use tubeless systemNo tubes means less friction, better efficiency and grip, a reduced risk of puncturesNew rim bed shape makes it easier to mount and change tiresFore drilling technology doesn't require the use of rim tape Specification Weight: 1480 grams (Pair without tyre) Recommended tyre sizes: 25 to 32 mm Rear axle: Quick Release only Front axle: Quick Release only Infinity Hubs QRM Auto bearing preload technologyInstant Drive 360 freewheel technology Front and rear bodies: aluminum Axle material: aluminum Rim Height: 22 mm ETRTO size: 622x19TC Road Rim Weight reduction: ISM 4DUST tubeless technology Fore tapeless tubeless technolo...