Cooling System Tester - Type B - Unique design allows you to test the cooling system on a running engine to check for leaks or excessive pressure when system is hot - Unique radiator adapter will work with most motorcycle, ATV and UTV applications equipped with a 30 mm spout - Use with a common hand pump to pressurize a non-running system (pump not included) - Remote, accurate, easy to read gauge makes readings and diagnosis easy - Tests radiator and radiator cap for leaks and correct pressure release limit - Specified range is most common on European manufactured radiators - Designed to work on radiator necks from 20 mm to 24.5 mm - Pressurizes motorcycle cooling systems to check for leaks - Adapter also available separately.