30PCS Coolant Pressure Tester Kit:The package includes 17pcs color codes radiator caps,3pcs aluminum adapters,2pcs radiator cap test connectors,1pc pressure testing pump with gauge,1pc vacuum purge & refill tool,2pcs clear hoses,1pc thermometer,1pc universal adapter,2pcs EU & US air intake joints,1pc padiator cap wrench,1pc user manual and a storage case High-Quality Materials: Built with premium aluminum alloy, rubber, and nylon, the 17pcs color codes radiator caps are designed for durability and reliability.;the reinforced hose and upgraded filling valve provide excellent sealing, corrosion resistance, and long-lasting performance under high pressure Coolant Vacuum Refill Kit: Equipped with a durable brass manifold body and fittings, this coolant vacuum refill tool ensures longevity and resistance to corrosion; the gauge reads from -30 to 0inHg (-76 to 0cmHg), with the optimal coolant refill range being -25 to -20inHg; the rubber hose offers excellent durability, anti-corrosion properties, and high-pressure resistance, ensuring a secure and efficient coolant refill process Easy Operation: Install the appropriate adapter ,connect the hand pump to the adapter, and pump it up to the recommended pressure (usually 10-15 psi), if the pressure holds steady, the system is fine; if it drops, there may be a leak, and the cooling system should be inspected Wide Application: The coolant tester kit is very easy to use for diagnosing radiator and cooling system issues, and the 20pcs radiator adapters are compatible with a variety of car models, trucks, and other vehicles,such as Mercedes-Benz, GM, Jeep, Peugeot, Subaru, Chrysler, Acura, Mitsubishi, Nissan, Mazda, Toyota, Infiniti, Geo, Suzuki, Isuzu, Honda, Lexus, Volvo, Saab, Citroen, Renault, Alfa, Mini Cooper, VW, Opel, Porsche, Audi, etc 30PCS Coolant Pressure Tester & Vacuum Refill Kit,Radiator Pump Pressure Tester Kit for Automotive Cooling System Water Tank Leakage Detection