Description: This throttle return spring kit includes two adjustment bars, two speed control springs, and two throttle return springs. These spare parts are ideal for GX140 GX160 GX200 engines and Chinese generators with a 168F gasoline engine. They are sturdy, durable, and high-quality, ensuring a long lifespan. Easy to use and install, this kit is perfect for maintaining optimal performance of your engine or generator. Please note that measurements and color may vary slightly. Please refer to the full description for more details.