Five litre pressure sprayer, that is used with a pump, to control and maintain the pressure. Fill up the container with thinned out paint, or ink, and pump the handle to create pressure inside the container. If the pressure starts to drop after a little while, simply just give it a couple of pumps. The sprayer has an adjustable muzzle, to help control the spray. Please note that it can be a little tricky to get the right consistency of the paint, but it just takes a bit of practice. Remember to also clean the nozzle every time it has been used.