Solvent free, Chemical resistant material. Very thick, 2 mm thick body. One set gaskets provided extra for future use. Pour Five liter of fluid and pump in for 30 times and adjust the nozzle for either fine mist or for pressure jet. Very useful for gardening, spraying pesticides, spraying perfumes, cleaning purpose washing motorcycles, scooters, bicycles and many house hold works. Usage instructions: 1) Not for kids play. Heavy pressure would be built up inside 2) when not in use, release the pressure using the valve 3) Clean the nozzle frequently. 4) Filter the impurities before spraying as they may block the nozzle.