Patented design, flexible impeller, 1/10 HP 390 GPH plastic water transfer utility pump * Angled inlet and outlet design keeps water lubricating the impeller - increases impeller life * No need for start-up vegetable oil lubrication. User friendly * Self-priming up to 9 feet (initially wetted impeller) * Water transfer up to 390 gallons per hour, maximum lift up to 55 feet