The MK17 EVO/G260 pairs SCUBAPRO's MK17 EVO first stage with the G260 second stage. The MK17 EVO is a balanced diaphragm first stage engineered for harsh environments, including ice-cold or polluted water, and is built for fast airflow to the second stage on demand. The G260 second stage is a balanced adjustable design with metal components, including the inlet tube, orifice, inhalation control knob and hose connector, for resistance to cold-water freezing. It also offers a diver-adjustable inhalation control, an adjustable VIVA setting to reduce free-flow risk, and a high-flow exhaust valve, along with a left-right hose attachment option for technical diving configurations. This system is suited to technical divers and cave divers working in cold water.