Coxreels P-LP-350-AL Spring Rewind Hose Reel for air/water: 3/8" I.D., 50' hose, 300 PSI is part of our Alumi-Pro® Series COXREELS® selection. COXREELS® Alumi-Pro® Series “Aluminum Professional-Grade” spring driven hose reels have the strength of steel without the weight! The Alumi-Pro® series is modeled after Coxreels’ popular P Series line of hose reels, but are uniquely constructed out of high quality aluminum. They’re compact, lightweight and non-corrosive making them the perfect choice when polypropylene or plastic hose reels are not the preferred choice due to their limited strength and durability.