[Manufacturer's description ] An afternoon out on the trails can be as good as a vacation, but only if your wheels can stand up to the stresses and strains of being ridden hard across all types of terrain. Sleeved rim Based on our proven Mavic construction. We’ve spent time fine-tuning the hubs to reach a much better level of reliability. Power transfer is handled by our TS-2 freehub system, inspired by our higher-end products. Precise and aggressive Straight-pull and bladed spokes ensure a high level of stiffness to offer better, more precise handling. And they also give the wheels a distinctive, aggressive look. Hubs are compatible with15mm axles.

Rims
Material: S6000 Aluminum
Joint: sleeved
Drilling: traditional
Disc brake specific profile
Valve hole diameter: 8.5 mm with pop off reducer
Tire: Clincher
Internal width: 21 mm
ETRTO size 27.5": 584x21C

Spokes
Material: steel
Shape: straight pull, bladed
Nipples: steel, ABS
Count: 24 
Lacing: crossed 2

Hubs
Front and rear bodies: aluminum
Axle material: aluminum
Sealed cartridge bearings