Thexton 356 Heater Core Backflush Tool

Fits 1/2", 5/8", & 3/4" heater hoses.
No need to use acids or caustic solutions.
Saves costly replacement of even most stubbornly clogged heater cores.
Made of Corrosion resistant aluminum.
Basic garden hose hook-up cleans cooling systems & heater cores without disassembly.