Does this product replace a specific part or function? Yes
Product major function & usage:Connect with the motor and carry the motor to run
Major advantages of upgrading to this product: 1.Made by high carbon steel, stronger and durable to achieve more smooth performance. 2.Middle hole:5mm,Tooth distance:1mm,Tooth:13T.Suitable for all motors with below specifiaction- 3.High carbon steel construction,Stronger than the stock