Material: aluminum alloy, rubber, and nylon What will you get in the box? -14 piece car cooling system water tank leakage detector Our product advantages: -Made of high-quality aluminum alloy, rubber, and nylon, it has better sealing performance, higher strength, and good toughness -Provide higher stability to extend service life and have better vacuum effect -Helps detect internal and external leaks. Perfect for detecting cylinder head gasket faults on which side or cylinder of the cylinder block is leaking -Blow molding tool box to keep all tools in place and avoid damage even under bumpy conditions -Suitable for cars, trucks, motorcycles, ATVs, air freight, etc