Heavy-Duty PVC Livewell Hose - 149 Series - 3/4" x 50' For use in heavy-duty bilge pump discharge and livewell circulation. Smooth black PVC tube reinforced with white PVC helical rod. Excellent flexibility. A smooth outer surface permits easy clamping. Not recommended for use in alcohol, anti-freeze, petrochemical, mild acid, solvent, or pressurized water systems.