The Arrow Mixing Products Model G-5 Gear-Driven Air Stirrer is a robust, air-driven solution designed to meet the demanding needs of medium to heavy-duty industrial mixing. Whether you’re mixing liquids, chemicals, or other substances, the Model G-5 delivers reliable performance with enhanced control and efficiency. This 1/2HP Gear-driven mixer has a speed range of 100-1,000 RPM's. The Model G5 comes standard with a 3/8" dia x 12" propeller shaft, 2-1/2"dia 4 Blade propeller & aluminum coupling.