The leak tester for cooling systems is a comprehensive set that has been specially developed for checking the tightness of cooling systems. It consists of 15 different adapters, which are housed in a practical plastic case. With a weight of 0.77 kilograms and a compact length of 250 millimetres, the device is easy to transport and store. The height of 80.7 millimetres ensures that the case also fits into tight spaces. The use of high-quality plastic as a material ensures that the adapters are highly durable and resistant. This tester is suitable for professionals and technology enthusiasts who want to carry out a precise and reliable leak test. The various adapters allow flexible use in different cooling systems, making the set versatile. It is an indispensable tool for the maintenance and repair of cooling systems, which can be used both in professional workshops and in the private sector.