Product material: Using high-quality alloy materials, more sturdy and durable. Product features: AMZSKU upgraded lawn mower carburetor, which is more fuel-efficient, environmentally friendly and easy to start compared with 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 + 2x gasket + 2x starter pump + 1x fuel filter pipe + 2 valves + 1 spark plug + 1 extra fuel filter.