Park tool double ended spoke wrench mavic sw13as a manufacturer of bicycle specific tools since 1963 you can safely rely on park tools many years of experience the worlds largest bike tool manufacturer is the first choice of professional and home bicycle mechanics around the world featurescomfortable vinyl dipped two sided spoke wrench is designed to easily access mavic fittings including the mavic ssc ksyrium and crossmax slr wheels the smaller end fits six splines of the integrated