300-ft. roll of 1/2in. polytubing designed to work with windmill aeration systems. Hosing is designed to move along as the windmill turns. U.S.A. Application: Hosing is designed to move along as the windmill turns, Compatible With: Windmill aeration systems, Size (in.): 1/2, Length (ft.): 300, Material Type: Poly, Includes (qty.): 1 3...