1" ID Black Ballast Hose as used in current MasterCraft Boats. Sold per foot. This hose has a smooth black cover with a vinyl helix for superior resistance to kinks. This hose is resistant to mild chemicals and saltwater. In addition to ballast systems this hose may be used for bilge pump intake/discharge, sink drains, live well intake/drain and sanitation intake/vent. This hose is safe for use below the waterline.