Infinity Fuel Drop Hose Size (in.):3 Used for cleaning heat control Used for cleaning heat control fire prevention pumping thawing blowout service steam pumps and hoists in open end or permanent installation operations Lightweight in construction Infinity™ HD (Heavy Duty) is designed for higher working pressure applications (150 PSI) Lightweight in construction it is designed to transfer biodiesel and ethanol blends gasoline and other petroleum products under pressure gravity flow or medium suction (up to 23° Hg) at ambient temperature and with an aromatic content of 60% or less Constructed with the exclusive PVC double helix for superior flexibility abrasion resistance and low coefficient of friction for ease of maneuverability