DT Swiss - PHR Washers S3-Cat-Accessories-Carriers-Fittings For example

For example

self-purging design and threaded seal collar

Front port to allow phone/charge/audio cables to pass through

Split Refill Lid allows for easy refilling while on-the-go

DT Swiss - PHR Washers S3-Cat-Accessories-Carriers-Fittings For exampleDT SWISS PHR WASHERS Pro Head Rim (PHR) washers have a unique shape, specifically a hyperbolic paraboloid. With this shape, the load bearing surface of the nipples on the rim is increased and stress concentrations at the rim holes are reduced. The shape of the PHR washer automatically aligns the specific DT Swiss Squorx (Pro Head) nipples, and together they act as a ball joint, further reducing the risk of spoke failure and rim cracking. Please note