1、Smooth and Efficient Operation: The 8 tooth 420 chain sprocket ensures smooth and efficient motor sprocket conversion, enhancing the overall performance of your motor. 2、Durable Carbon Steel Material: Made from carbon steel, this 420 8 teeth motor sprocket is highly durable and can withstand long term use, providing reliable performance. 3、Optimal Thickness: With a thickness of approximately 5mm, this 8 tooth 420 chain sprocket is designed to provide optimal strength and stability, ensuring reliable operation. 4、Perfect Fit: The inner dimension of this 8 tooth 420 chain sprocket is approximately 17 x 12mm, making it suitable for H type shaft gears of 120W and 100W small motors. 5、Versatile Applicability: This 8 tooth 420 sprocket is compatible with a wide range of small motors, making it suitable for various applications such as bicycles and other machinery.