1Made of material, solid and durable. 2Ensure that the chain energy saving smoothly and freely into and out of mesh, reduce the impact of mesh chain and contact stress. 3The tooth have high strength and wear resistance. 4Perfectly fitment and the surface and edge is smooth. 5Wonderful spare parts to replace your old or broken one.Features:1. Made of material, solid and durable.2. Ensure that the chain energy saving smoothly and freely into and out of mesh, reduce the impact of mesh chain and contact stress.3. The tooth have high strength and wear resistance.4. Perfectly fitment and the surface and edge is smooth.5. Wonderful spare parts to replace your old or broken one.Specification:Condition: Material: IronColor: As Pictures ShownPackage List:1 x Chain Sprocket Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.