​It is a part of choice products CLEAMEN or Krystal. The foam is made thanks to a screen put in front of the jet, what we recommend during application of concentrated cleaning products which makes foam. When products which are not foaming are applicated, open the screen to reach correct function of the sprayer. Turning the spraying jet, it is possible to close the sprayer and so it is possible to use it as cap for transport. It is sold as set of 12 pcs.