Hope spiderless retainer ring
Spiderless retainer ring chainrings for standard frame offset saves weight without need for a seperate spider able to run a broader range of smaller chainring sizes the narrowwide chainring is designed to retain the chain without the need of a chain device quieter drivetrain and less drag cnc machined 7075 t6 aluminium provides the perfect blend of lightweight and strength direct mount retainer ring designed specifically for our chainset