Petersen 2-1/2-Inch to 3-Inch Drainjet, 63 to 76 Mm Drainjet turns household water pressure into a powerful jet; flushing force and hydraulic action break through toughest obstructions Flexibility: the petersen drain flusher easily snakes around bends and elbows Stiffener spring: allows snaking around pipe bends Tough professional quality construction: Constructed of heavy duty specially treated reinforced industrial fabric for extra strength Connection, 3/4-inch garden hose