Pro Head Reinforcement System (PHR) has a larger and more spherical contact area and is designed to balance loads transferred to the rim. The PHR system acts like a ball and socket interface allowing the spoke to pivot and follow the perfect trajectory from hub to rim.
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DT Swiss Pro Head Spoke Nipple Reinforcement Washers – Spline One Box of 100 | Bikeparts.Com Original
Original price was: $16.00.$8.00Current price is: $8.00.
