Self-priming and self-lubricating. Easy to clean. Will not mar boat. Solvent welded construction. Will withstand temperature to 120. Special all polyvinyl body and shaft. Non-conductive, non-corrosive. With seal. GPM 6 Description 10 Stroke/Gal. Size 18″ L x 1-1/4″ Dia. Hose 20″ Flexible