DT Swiss EX 471 26 Tubeless-Ready Disc Rim: 28h Black includes Squorx Nipples 2.0 silver alloy Prolock Squorx Pro Head nipples and PHR washers included Intended use is All Mountain and Enduro riding 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 Sw Tubeless-Ready Alloy rim (tape, valves and sealant sold separately) ERD and weights shown include PHR washers