Shimano SF-MX30 Freewheel - 16t Silver Model=WH-1 Wheel Holder while 112 BCD inner rings

while 112 BCD inner rings are shared between the two groups

A new construction process enables maximum carbon-layer compression pushing durability to unprecedented heights

Ergonomic BASF Infinergy core absorbs road shock vibrations and reduces stress on lower back Saddle Cut Out No Material Synthetic Clamp Style Standard Rails Gender/Age Men's Color Stealth Defined Color Black Size MD/LG

DD - In addition to the RaceGuard protection belt there is an effective fabric protector on the sidewall as well for dual layer protection

Shimano SF-MX30 Freewheel - 16t Silver Model=WH-1 Wheel Holder while 112 BCD inner ringsShimano SF MX30 Freewheels for service and repairs. 1 2" x 3 32" 9 Speed Chain compatible Cassette Body Type Threaded Standard 1. 37" x 24tpi Weight 0 Size 16T Color Silver