... chain sprocketMaterialA3 Steel/ 45#ColorSilver, black, brass,red, gray,white, etc.Size174.5MmmWith TeethFront:13-17TRear:37-53TFeatures1.Avariety of ... with different colors and designs.2.Treatment:sand blast,white zine,tool grain and quench 3.Normal travel distance ... working life span.8.CNC system8.Packaging:color poly bag,white poly bag,white box,blister card,or as your request9.Delivery is ...