Product material: Using high-quality alloy materials, more robust and durable. Product features: The lawn mower carburetor is designed and improved by CYWVYNYT, which is more fuel-efficient, environmentally friendly, and easy to start compared to other products. Applicable models: Suitable for 52cc 49cc 43cc lawn mower carburetor, chain saw carburetor, irrigation machine carburetor, and other equipment with a fixed hole center distance of 31mm. Package includes: 1x carburetor + 1x gasket + 2x starting pump + 1x fuel filter pipe + 2 valves + 1 spark plug + 1 extra fuel filter.