The 2109-RED High-Pressure Regulator by Gas One offers a user-friendly and top-quality connection for a wide range of propane appliances. With an adjustable knob that allows for pressure modulation from 0 to 20 psi, this regulator ensures optimal output for burners, heaters, smokers, and fryers. Crafted with high-quality rubber and brass connections, it provides a durable and long-lasting solution, offering an airtight connection and a leak-free experience with any heavy-duty appliance. It comes ready to use straight out of the box, simply connect it to the propane tank and appliance (using tools for a secure connection) and enjoy hassle-free operation. The hose measures 4ft in length and features a secure fitting with type-1 (QCC-1) propane tank connections, with inside ⅜-inch flare fitting and an outside diameter of ⅝ inches. Please note that tools are required for a secure leak-free connection to your propane appliance, and the regulator offers an adjustable output ranging from 0 to 20 PSI. Description by ChatGPT.