Product Name: STONE Chainring adapter, narrow wide, THM M3 to 104BCD, single speed
Material: High strength Aluminum 7075-T651, supplied by USA company Aleris who is supplier to aircraft make Airbus, Boeing and Bombardier.
Material Hardness: HB150
Color: black
Thickness: 6MM
Fit for: THM M3 MTB Crank
Boost Model
Install chainline:52mm
Surface treatment: Anodize, high speed CNC
Package content:
1*Spider
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