- User-Friendly Design: The coolant funnel set features a distinctive rotary switch that prevents overflow and trapped air with a simple twist, ensuring a smooth operation. It offers maximum comfort, ease of use, and convenient storage. - Spill-Free Refilling: This leak-proof funnel set attaches securely to radiators, allowing for clean and efficient refilling of coolant or oil without spills or air pockets. The extra-long funnel reduces the risk of spills and leaks during the coolant flushing process. - Enhanced Functionality: The extension rod is designed for hard-to-reach areas, while the reinforced, leak-proof threading ensures dependable performance even in extreme conditions. - Versatile Application: Whether you're performing multi-purpose coolant pressure tests, radiator flushes, or engine flushes, this leak-proof coolant funnel set has you covered. It includes a universal adapter compatible with both domestic and foreign vehicles. Use Scenarios: 1. Ideal for routine maintenance, allowing you to easily refill coolant without worrying about spills or mess. 2. Perfect for professional mechanics needing reliable tools for coolant or oil changes in tight engine compartments. 3. Great for DIY enthusiasts performing radiator or engine flushes at home, ensuring a clean and efficient process.