Product Description ☛FUNCTION OF THE AIR FILTER: The air filter provides excellent protection for the mower engine from harmful effects, prevents the ingestion of dirt and helps improve machine performance. ☛MATERIAL: Replacement air filters are made of #39;excellent filter paper and the metal mesh protective structure helps extend their service life. So they can effectively prevent dirt from entering your machine and thus help improve performance. Specifications Size: 13cm* 11cm Color: as shown in the photo Usage: Ensure the protection of the lawn mower's air filter and preserve its service life. Scope of delivery 5pcs x replacement air filter