【Steel Material】Our 68 tooth sprocket is crafted from quality metal material, featuring a sturdy structure and resistance to wear and tear 【Size Information】The 68t front sprocket has a diameter of approximately 14cm/5.51inch; the 7t tooth pinion has a diameter of approximately 1cm/0.39inch 【Fitment】This 68t 25h front sprocket is specifically designed for 47cc and 49cc dirt bikes, ATV quads, minimotos, and motorcycles 【Professional Accessories】Replacement 68t sprocket includes a 136-link chain and 7t tooth pinion, offering stable performance and high reliability 【Direct Replace】Dirt bike front sprocket assembly is a direct replacement for worn or damaged parts Size Chart: Diameter: 14cm/5.51inch Package Includes: 1x Front Sprocket with Pinion and Chain Note: Please allow slight measurement variations of 1-2cm due to manual measuring methods