Graco Xtreme-Duty high-pressure hoses are flexible and durable, yet extremely easy to use. Because hoses take a beating on the jobsite, Graco puts its hoses through a unique safety testing regimen in our state-of-the-art manufacturing facility. Each hose design undergoes impulse, burst, flexibility and cold bend testing to give you top quality, durability and reliable performance. Xtreme-Duty hoses are available in different lengths, diameters, and three different pressure ratings. The length and diameter of hose you use affects the pressure drop of fluid to the spray gun. A longer hose has a greater pressure drop. A smaller hose diameter has greater pressure drop. If using two different diameter hoses coupled together, attach the larger diameter hose to the pump and the smaller hose to the gun to minimize pressure drop.