Shopping from link below:
STONE 110 BCD Oval Chainring, narrow wide tooth
Size: 110 BCD oval
Speed: 9-10-11-12 speed, Support both Shimano and Sram 12 speed chain
Fit for: Most 110bcd crank , 5 arms road bike
for Sram red 110bcd,force,rival,S350-1,S900,S100 2.2 110bcd.
For Rotor 110bcd road/MTB Crank
Surface treatment: Anodize, high speed CNC
CNC process precision: 0.03mm
Material Hardness: HB150
Material: High strength Aluminum 7075-T651, supplied by USA company Aleris who is supplier to aircraft make Airbus, Boeing and Bombardier.
1 x chainring, 5 bolts