Bike Freewheel, High Strength Steel Bike 11 Speed Freewheel Wear Resistance Durability Bicycle Flywheel Sprocket PartsSpecification:Item Type: Bike FlywheelMaterial: High Strength SteelGross Weight: 775g / 27.3ozSpeed: 11 speedsNumber of 11 Speed Teeth: 11, 13, 15, 17, 19, 21, 23, 25, 28, 32, 36TPackage List:1 x Bike Flywheel Features of Bike Freew..