Stone Chainring 130 BCD Oval for Brompton 3sixty Sram Red Shimano 5700 6700 Road Folding Bike 42 44 46 48 50 52 55 56 58 60T Tooth Bicycle Chain Wheel Cycling 9-12s 1x Speed

Product Name: STONE 130 BCD oval Chainring, narrow and wide single speed chainring. 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. Please leave message if you want aero style non-hollow. Color: black Size: 130 BCD Ovality: 8.3%. Thickness: 4MM. Speed: 9/10/1112speed 1x Speed. Fit for: 130 bcd crank for Sram red for Rotor for Shimano 57006700. Product Name: STONE 130 BCD oval Chainring, narrow and wide. 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. Please leave message if you want aero style non-hollow. Color: black/sliver. Size: 130 BCD. Ovality: 8.3%. Thickness: 4MM. Speed: 9/10/1112speed. Support both Sram and Shimano 12 speed chain. Fit for: 130 bcd crank. for Sram red. for Rotor. for Shim