Material: High strength Aluminum 7075-T651, supplied by USA company Aleris who is supplier to aircraft make Airbus, Boeing and Bombardier.
Color: black
CNC process
Fit for Stone chainring 107bcd 2x double chainring for FORCE crankset. it is only for Stone double chainring, not work for other double chainring.
It not work for 1x speed FORCE chainring.