Compatibility: This air filter maintenance kit is compatible with Toro TimeCutter SS SW SWX 42in and 50in models with V-twin engines. Function: It effectively filters airborne particles to protect the engine and optimizes airflow for improved combustion efficiency. Contents: Includes 1 air filter, 1 pre filter, 2 spark plugs, and 1 oil filter. Installation is simple for convenient replacement. Note: Please verify your engine model and part numbers before purchase to ensure correct fitment. Note: 1. Please allow 1-3 mm error due to manual measurement and 1-3g weight error make sure you don't mind before ordering. 2. Due to the lighting of the photos and the difference of monitors, the pictures may not reflect the actual color of the real item. Please make sure you don't mind before ordering, thank you! About Shipping: 1.please pay attention to your delivery address such as: name, street, house number, doorbell/email without name, etc. is correct, or the order will not be delivered correctly. 2.All items will be shipped within 3 business days after the payment is received. Most times you will receive them within 8-12 days then. The specific delivery time is depend on circumstances. 3.During the shopping process, if you have any questions, please feel free to consult us, we will reply you within 24 hours Hope you have a pleasant shopping experience!