- Unique design: our high-end coolant funnel set uses a rotary shut-off switch that closes with a gentle turn, effectively preventing overflow and bubbles during filling. - Universal and spill-free: the kit can supply liquids such as coolant and oil to any vehicle. The long spout minimizes spills and trapped air during refills after a coolant flush. - Complete multi-purpose kit: includes 5 adapters, 4 fuel caps, 2 45-degree angles, 2 x 5 inch extensions, and a high-quality clear frost-protection funnel. - Reach and leak resistance: the longer extension bar is designed for hard-to-reach areas and can be positioned at any angle on the radiator cap. The thread reinforcement design helps ensure that liquid does not leak in extreme environments. - Practical applications: 1) During a coolant flush in tight engine bays, use the long spout and extensions to direct flow precisely and avoid spills. 2) Refill coolant or top up oil in vehicles with limited access, using the adapters, angles, and extensions for accurate delivery. 3) Service in cold or rugged conditions with the clear frost-protection funnel to improve visibility and reduce leakage risk.