The Hope Retainer Chainring has a narrow/wide tooth configuration designed for 1x10 and 1x11 set-ups without the need of a chain guide. The Hope Retainer Chainring is CNC machined out of 7075-T6 aluminium, providing the perfect blend of weight vs strength. Hope Retainer Chainring Features Available in 104mm PCD, 4 bolt pattern Designed for single ring use- suitable for XC, Trail, AM and Enduro Designed to be used alongside Hope's range of chain guides   Hard anodised finish makes them ultra durable and increases longevity Weight from: 33g Available in 30T,32T,34T,36T and 38T options