The GRF400 series is a compact and cost-effective flowmeter regulator specially designed for light duty tasks. It is engineered to work smoothly with Argon, Helium, and Carbon Dioxide (with a 20% duty cycle for CO2). The flowmeter regulator comes with a flowtube made of impact-resistant Lexan, ensuring durability. With its precision needle valve and one-piece flowtube cover, it offers accurate and reliable performance. The product does not include a hose.