ATD Tools 3305 10-Piece Radiator Pressure Tester Update Kit Adapter update Kit to use with ATD-3300 Test Kit, 10 piece Detects internal engine leaks caused by blown head gaskets and/or cracked block or heads Easily test entire cooling system; including radiator, heater core and radiator cap Kit includes 8 radiator adapters and 2 radiator cap test adapters to fit the most popular domestic and import cars and light trucks Kit Includes: 8 Anodized Aluminum radiator Adapters, 2 Radiator cap test adapters, Instructions, Storage and Carrying case