This is a pair of replacement rings and clips for R-SYS wheels with TraComp Spokes. Contains 2 rings and at least 4 red plastic clips. Mavic Part #: 996 938 01
From Mavic tech: With the R-Sys Tracomp concept, the nipple and the tubular spoke are fixed together. Thus, when turning the nipple of a tubular spoke, the spoke itself turns along its entire length (nipple, tube and head). CONSEQUENTLY, BEFORE TURNING THE NIPPLE OF A TUBULAR SPOKE (TRUING, REPLACING A SPOKE, REPLACING A RIM), THE TRACOMP RING MUST FIRST BE REMOVED FROM THE HUB.