Kmc x1 332 internal hub gear chainthis chain is kmcs solution to all people riding single speed fixies or bikes with hub gears with kmcs double durability this chain is designed to outlast any of the competition perfect for the market of fit and forget components the general idea of having single speed or internal hub gears is for lengthened life and low maintenance this chain follows that same ideal features12 x 332110 linkspin length 67mmfor rohloffinternal gear hubssingle s