146BCD, 4 arms
Fit for shimano M960 crankset
Narrow wide tooth for 1x speed. Not for 2x speed use. It not support front shifting
Chain fit: 9/10/11/12 speed
(default not support axs flattop 12s chain. Send us message for customize if want axs flattop tooth)
Material: High strength Aluminum 7075-T651, supplied by USA company Aleris who is supplier to aircraft make Airbus, Boeing and Bombardier.
Material Hardness:HB150
CNC process precision:0.03mm
Thickness: 4MM
Surface treatment: Anodize, high speed CNC
Weight: 74-110g
