From the site

http://www.mavic.com/ewb_pages/p/pis...=2&gamme=piste

WEIGHT
Front 957 g, rear 1039 g
RIMS
Material: 6106 alloy
Joint: SUP welded
Finishing (color): black anodized
Tire: clincher only
Eyelet: Zamac aluminum profiled eyelet
SPOKES
Material: stainless steel
Type: ultra flat straight pull
Lacing: front radial, rear crossed 2
Type: ultra flat straight pull
Lacing: front radial, rear crossed 2
HUBS
Bodies: aluminum alloy
Rear hub: threading on both sides to allow the mounting of 2 different cogs
Axle material: steel, front and rear
Adjustable, removable and sealed cartridge bearings
COMPATIBILITY
Fixed cog: rear hub thread: 1.37 x 24 TPI
ACCESSORIES
Fixing nuts
Delivered with: user guide, rim tape, bearing adjustment tool (rear wheel), valve extenderve