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 and heater cores without disassembly.
Availability: In stock.