1.Bike Single speed freewheel 11 Speed -13 Teeth ; OD 53.4mm/2.1inch, ID 34.5 mm / 1.36 inch, Thickness 4mm/0.15inch.
2.Compatible with Shimano HG Series, Applicable to Mountain Freewheel,a best accessory for bikes.
3.High precision: the bicycle freewheel sprocket have clear internal threads that fit tightly into the hub for a smoother and smoother ride with no noise.
4.Mountain bike flywheel repair parts, loss tooth design to prevent chain loss.
5.Single Speed Bike Freewheel is made of high strength steel, wear-resistant, high performance.