The American Classic Disc 29” Wheelset is “laterally stiff and showed no signs of weakness on everything from smooth singletrack to rock gardens. Take a pound off a bike and you’ll feel it on the climbs or when lofting the bike over obstacle. The reduction in unsprung weight is noticeable as soon as you hit the trail” as quoted by Mountain Bike Action Magazine. Rims are aluminum spokes are AC 14/15 gauge 32h 3-Cross Front and Rear. Quick Release: Cro-moly. Compatible with many of the tubeless conversion kits on the market. Black spokes. 773 grams front 877 grams rear.