Alpha 50 II Disc is upgraded on the rims. The upgraded U/V rim profile combines the aerodynamic stability of a U-shape with the wind-cutting efficiency of a V-shape, delivering reduced drag and better performance in crosswinds. This design also enhances lateral stiffness for improved power transfer during sprints and climbs, while offering smoother tire-to-rim transitions for better handling, comfort, and versatility across varied terrains. It is an affordable road bike wheel with a 6-pawl freehub and 72 engagements for a lightning-fast response. Boasting a 28mm external width and 23mm internal width for superior strength and performance, it also comes with the option of ceramic bearings for a smooth ride. The Alpha 50 II disc is the comprehensive best choice for your cycling needs. Affordable price 6-pawl freehub, 72 engagements Ceramic bearings (option) 28mm external width, 23mm internal width Comprehensive best 100% Carbon Fiber Toray T700 & T800 Light weight 1459+-20g/pair Recommended tire 700 x 25-42mm Tubeless-ready rims Specification Rims 50C Material Alpha Pro: Carbon Fiber Toray T700 & T800 Size 700C Rim Finish: UD Matt Drills: 24/24 Holes Outer Width: 28mm Inner Width: 23mm Depth 50mm Profile Clincher Tubeless Ready Hub ICAN D21 Hub, 12X100mm/12X142mm, centerlock Spoke Pillar 1423 Spokes Spoke Count Front: 24 Rear: 24 Spoke Pattern Front: 2-cross Rear: 2-cross Nipple Alloy Color: Black Cassette Compatibility Shimano 11 speed Wheelset Weight Total: 1459+-20g (Front: 671+-10g Rear: 788+-10g) Braking Surface No Braking Surface Recommended Tyre Size 700 x 25-42mm Rider Weight Limit 105kg Guarantee 2 years Packing Size 81.5cm x 17cm x 65.5cm