Key Features and Benefits Leak-Free Oil Filling: Precisely matches the vehicle’s original oil filler port with a tight seal, preventing splashes and leaks during oil filling. This keeps the engine compartment clean and prevents oil from corroding the lines. High Operational Efficiency: Compatible with pneumatic oil extraction and filling equipment, it fills oil faster than ordinary, simple funnels, saving time and effort during large-scale maintenance. Durable Construction: All fittings are made of aluminum alloy—unlike plastic fittings—making them resistant to oil corrosion and impact damage. They remain crack- and thread-slip-free even with long-term, frequent use. Extremely Versatile: With 24 fitting sizes covering over 95% of oil filler necks on passenger cars and SUVs on the market, a single tool set can handle all oil change needs for every vehicle model at your shop. Portable Storage: The one-piece, shock-resistant toolbox features fixed slots for all accessories, ensuring neat organization and convenient portability for on-site service calls.