DT Swiss RR 411 Rim - 700 Rim Black 32H AsymmetricDT Swiss RR 411 Rim 700 Rim Black 32H Asymmetric. RR 411 Rims are tubeless ready and constructed from alloy ready for your next wheel build. 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