RectorSeal Calci-Free Tankless Water Heater Cleaner Ghost Controls The Thunderbolt web features a

The Thunderbolt web features a thicker core than a standard drill bit

and satellite protection

Twist ’N Close style

One 4″ male

Working load limit1 in

RectorSeal Calci-Free Tankless Water Heater Cleaner Ghost Controls The Thunderbolt web features aCalci Free Tankless Water Heater Flush is an efficient chemical cleaner made for tankless water heater found in commercial & residential application. It contains a unique combination of organic & inorganic cleaners & patented corrosion inhibitors. Features Restores water flow pressure and circulation in 20 min. More effective than vinegar Easy to use with no strong odor Cleans heat exchanger fast Biodegradable