Description:100% brand new and high quality.12 tooth freewheel for bike.Mainly used to refit your bike.Color: as pictures showMaterial: metalOverall size: about 52 x 52 x 24.3 mmTooth number: 12 toothInternal thread: about 17 ¡À 1mmAperture: approximately 18 ¡À 0.02mmWhether it can be rotated reversely: No Package includes:1 x 12 Tooth Freewheel Gear