1Efficient and Convenient: The coolant refill tool kit is a highly efficient and convenient toolbox that includes various testing tools and accessories to quickly and easily detect leaks and pressure in your car's coolant system. 2Simple to Test: This radiator pressure tester kit allows you to replace coolant and test your vehicle's cooling system (including radiator, heater core, and radiator cap) for leaks in a simple and straightforward manner. 3Comprehensive Testing: Equipped with a high accuracy pressure gauge and a variety of testing heads, this toolbox can detect leaks and pressure in the coolant system and ensure the integrity and reliability of the car's radiator. 4Antifreeze Change: The kit is equipped with antifreeze changer to ensure safe and reliable replacement of antifreeze. With the help of the changer, you can thoroughly and cleanly replace the antifreeze, helping to extend the life of your car. 5Universal Fitting: This kit comes with a universal fitting, making it more convenient to use compared to conventional styles, eliminating the need to search for matching fittings and saving time. 6Portable and Lightweight: The refill tool kit is a lightweight and portable toolbox that features a compact design, making it easy to carry and use anytime, anywhere, whether at home or in the car.