Self-priming and self-lubricating. Easy to clean. Will not mar boat. Solvent welded construction. Will withstand temperature to 120 degrees. 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