- Easy to handle and store: a unique rotary switch closes to prevent overflow and air bubbles. Simple operation and compact storage. - Spill-free refills without measurement: delivers engine oil and radiator fluid without spills or air bubbles. The extra-long funnel fits securely into the radiator opening, reducing mess and providing a smooth refill after coolant flushing. - Innovative funnel design: extension rod reaches tight areas for easier access. The reinforced thread design helps prevent spills even under demanding conditions. - Wide application and compatibility: multifunctional coolant funnel and pressure testing kit suitable for radiator and engine flushing, ensures zero pollution and zero waste. Universal adapter fits both US and foreign vehicles. - Use scenario 1: After a coolant flush, use the funnel to top up radiator fluid quickly and cleanly without removing components or creating a mess. - Use scenario 2: During an engine oil change, refill through the appropriate opening with minimal spills, using the extended reach to access hard-to-reach areas. - Use scenario 3: In tight spaces within the engine bay, employ the extension rod to reach restricted locations for thorough refilling or pressure testing, ensuring complete and efficient maintenance.