Hope spiderless retainer ring boostthe hope spiderless retainer ring is a neat lightweight direct mount retainer ring option for hopes chainset featuresdirect mount retainer ring designed specifically for hopes chainsetsaves weight without need for a separate spiderable to run a broader range of smaller chainring sizesthe narrowwide chainring is designed to retain the chain without the need of a chain devicequieter drivetrain and less dragcnc machined 7075 t6 aluminium provides the perfect