Shopping from link below:
STONE 76 BCD Chainring, narrow wide, for sram xx1
Color: black
Size: 76 BCD
Tooth:30-40T
Thickness: 4MM
Speed: 9/10/11/12 speed for both Sram and Shimano chain
32t-36t is Non-Hollow style 38t-42t is Hollow Style
Fit for crank Sram XX1
Surface treatment: Anodize, high speed CNC
Material: High strength Aluminum 7075-T651, supplied by USA company Aleris who is supplier to aircraft make Airbus, Boeing and Bombardier.
Material Hardness:HB150
Tooth Max diameter(mm) Weight(g)
32 T , 134 mm , 44 g
34 T , 145 mm , 51 g
36 T , 154 mm , 62 g
38 T , 162 mm , 74 g
40 T , 170 mm , 85 g
Package Contents:
1 x chainring, 4 bolts
