Miller Coolmate 4 is a compact and portable coolant system designed to provide a constant flow of coolant to inert gas torches/guns. It features a high-pressure pump, a radiator with a fan, and a relief valve. The coolant level is above the pump, ensuring that the pump is always primed. It has a 5-gallon polyethylene tank capacity and can operate on both 115V and 230V single-phase power. With dimensions of 16-1/4" x 13-1/4" x 18-3/4", it's easy to transport and can fit in tight spaces.