The most advanced alloy existing for rims meets the most advanced rim profile to form the RR 411 rim. From the moment the alloy is melted all the way to the secret surface treatment, this rim is all about getting the absolute best out of the great, shiny metal that is aluminum. Very light, very strong and very classy. Features: Tubeless-Ready Alloy rim can be used with or without tubes (tape, valves and sealant sold separately) 2.0 silver alloy Prolock Squorx Pro Head nipples and PHR washers included The wheel must be built with the supplied PHR washers and Pro Head nipples. The PHR washer must be positioned between the nipple and rim and fit correctly within the radius of the rim. DT Swiss recommends that the contact area between the nipple and PHR washer is greased ERD and weights shown include PHR washers Specs: Weight435g Rim Width (Internal)18mm ISO Diameter622 / road / 29" Rim MaterialAlloy Manufacturer Spec ERD (mm)601mm Wheel Size700c Defined ColorBlack ValvePresta Hub Drilling24 Tire TypeTubeless Ready ColorBlack Rim Center Offset (mm)0mm Brake TrackMachined See Also: TL1934