Front sprocket: | 13T/14T/15T/16T/17T etc |
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Rear sprocket: | 34T/35T/36T/37T/38T/39T40T/41T/42T/43T etc |
Chain : | 420,428,428H,520,530 etc |
Material: | Stainless steel/ Carbon steel/ A3/ Aluminum etc |
Surface Treatment | Galvanized/Chrome plating/Eletrophoretic plating/Sandblasting/ Dull polish/Spray finishing |
Heat Treatment | High frequency to improve the hardness and tensile strength Galvanize color-Zinc to rust protection |