Made of stainless steel. These 3 different shaped jetter nozzles have different functions. 1 × Button nose nozzle has three rear-facing jets and one forward-facing. 1 × Rotating sewer jet nozzle rotates and has only 3 rear-facing jets, it has good forward pull to help push hose down the drain line. 1 × 1/4 inch female npt fitting helps convert 1/4 female NPT fitting to 1/4" quick plug.