Hercules Cryo-Tek 1 Gal. Non-Toxic Corrosion-Resistant Antifreeze

Hercules Cryo-Tek Original Antifreeze is a ready to use 45% Virgin Propylene Glycol formula. It's designed for hydronic heating and cooling closed loop systems, most solar heating systems, snow melts, radiant heat and general plumbing systems. Behold the power of Hercules, products built to last and trusted by plumbers to withstand even the toughest conditions.