1"x50Ft UL Flexible Non-Kink Water Garden Pond Tubing – UL Size This tubing works best with Alita, Atlantic Water Gardens, Aquascape, Little Giant, Oase, Pondmaster and Savio Products.Our UL Non-Kink Flexible PVC hose, commonly referred to as UL size, US size, UL non-kink, UL kink free tubing, UL water garden hose, UL pond tubing, and UL corrugated tubing is perfect for use with water gardening, ponds, waterfalls, fountains, aquariums and fish hatcheries, drains, light farming and gardening and light irrigation.