The 50 Ft Pool Backwash Hose is a heavy-duty, reinforced sump pump hose designed for above-ground pools or sump pumps. Made of durable PVC material, this blue hose features a 1-1/2" flat diameter and is lined with PVC for added strength. The set includes the hose itself, making it a convenient and essential addition to your swimming pool maintenance tools. With its sturdy construction and reliable performance, this hose is perfect for efficiently removing debris and sediment from your pool during backwashing sessions.