Product Description The as a plastic sealing ring for the spoke pin on the rim. Technical Information:Material:compositeCompatibility:crankbrothers wheels of all generationsnot for Synthesis wheelsManufacturer Number:11218 Contents:1 x Manufacturer: Crankbrothers 3100 W Segerstrom Ave Santa Ana CA 92704 USA info@crankbrothers.com Distributor: Cosmic Sports GmbH Leyher Straße 47 90763 Fürth Germany info@cosmicsports.de