UPANBIKE Mountain Bike Chainring Guard BCD 104mm Aluminum Alloy Protector Cover For 40 42T Bicycle Sprockets

HIGH QUALITY MATERIAL:Constructed of premium aluminum alloy,high strength,wear resistant and durable to use.A nice replacement for the old or broken ones of your mountain bike chainring guard. EFFECTIVE PROTECTION:Great accessories for your chainring,this chain ring guard is designed to protect your bike chainring from scratches and friction.Give your chainring a good protection,and prevent your clothes get dirty at the same time. STEADY cycling:The ergonomic round design creates more stampede traction,which relieve the fatigue of leg or knee and ensures a smooth cycling. COMPATIBILITY:Easy to install and fits perfectly the 104mm BCD bike,compatible with 9 speed bikes,only takes you few minutes to install without any installation guide. MULTIPLE CHOICES:We have three sizes,32T~34T,36T~38T,40T~42T,meet all kinds of your need.Each chainring guard come with four bolts.