Sierra Shields Livewell Hose 3/4"Sierra Shields Live Well Hose has a black smooth cover with vinyl helix. The Well Hose is rated for full vacuum and is resistant to mild chemicals and saltwater. I.D.:; 3/4" or 19.1mm; Wt. "C": 16; Bend Radius: ; 3" or 76.2mm; Vac Rating: 28; Application: This hose is primarily used for bilge pump intake and discharge, drains (sinks, shower, and scupper); This hose is also used for livewell intake and drain, and sanitation (Intake and vent); This hose is utilized for below the waterline connections; Note: Do not use ethylene glycol based antifreeze in hose. Not for potable water.