Essential for rebuilding DT's premium PHR system rims
Only to be used with DT's PHR system washersThe
convex Pro-Head nipples pivot freely in order to align perfectly with
the spoke, creating a stiffer, stronger wheel with no weight penaltyPro-Lock coating prevents loosening under use but also prevents seizingCan be turned either by using a conventional spoke key or a female T25 socket such as the TLDT113Standard PHR nipple length, 15 mm