Durable Material: The clipper filter element made of high quality plastic and solid rubber paper is sturdy and durable, with good pressure resistance, corrosion resistance and airtightness. It can be used for a long time. Safety protection: The air filter is installed in front of the carburetor or the intake pipe to filter dust and sand particles in the air to ensure sufficient and clean air inlet into the cylinder. In dry and sandy lawn environment, regular air filter replacement can better protect your machine from damage! Package includes: 2 x air filter (11*6.5*3.5 cm / 4.3 * 2.56 * 1.4 inch) Pleated paper design: The lawn mower air filter is made of oval pleated paper, which provides good protection for the engine , prevent dust inhalation and greatly improve the work efficiency of the lawn mower.