Made in Colorado; the Down River 4in Barrel Pumps have become the standard among commercial outfitters and private boaters throughout the world. These pumps have a 1in diameter x 6ft long Tigerflex non-collapsible hose with an aluminum nozzle designed to fit most standard inflation valves, and comes standard with check valves (military valve compatible). There's a spare O-ring in the bottom of each pump cylinder. Urethane reinforced base to increase durability. Foot plate and plunger disc are both made out of high density polyethylene and has two 1in cam strap holes for securing pump. A must have for any boater, the Down River 4in Barrel Pump.