These couplings are especially designed for use on washing devices (regardless of whether WAP, Kärcher or Kränzle) and are suitable for use with water and cleaning agents. They even resist strong vibrations and can be used for the connection washing gun-hose or wash device-hose. We recommend the use of stainless steel couplings depending on the application. For foam application guns we offer special connecting couplings, which are used for connecting rinsing lances/foam lances with the foam application guns.