... )Standard:DIN,ANSI,BS,JIS 3)Processing:Forgin-Machining-Hobbing Automobile Sprocket 1)Material:C45 steel, Cast Iron 2)Standard:DIN ... ,ANSI,BS,JIS 3)Processing:Forgin-Machining-Hobbing Automobile SprocketFeatures:1)Material:C45 steel, Cast Iron2)Standard:DIN,ANSI ... ability to make special items according to customer's design. Automobile Sprocket