Shopping from link below:
STONE 96 BCD Oval Chainring, narrow wide tooth
Symmetrical 96mm oval
Ovality:7.8%
Thickness: 4MM
Speed: 9/10/11 /12speed, Support both Sram and Shimano 12 speed system
Fit for crank: XTC820 M782 M612 M622 M4050 M672 M4000
Not for M7000, M8000, M9000
Tooth: 34-48T
Color: black
Surface treatment: Anodize, high speed CNC
Material Hardness:HB150
Material: High strength Aluminum 7075-T651, supplied by USA company Aleris who is supplier to aircraft make Airbus, Boeing and Bombardier.
Package Contents:
1 x chainring, 4 bolts
Tooth Max diameter(mm) Weight(g)
34 T , 154 mm , 54 g
36 T , 162 mm , 65 g
38 T , 170 mm , 74 g
40 T , 178 mm , 78 g
42 T , 186 mm , 82 g
44 T , 194 mm , 93 g
46 T , 202 mm , 102 g
48 T , 210 mm , 112 g
