A Suttner ST175 twin foam lance. This lance enables the user to easily switch between foam and rinse by simply turning the switch valve that is fitted. To ensure you receive the correct nozzle size for the fitted ST75 and rinse lance, please use our interactive nozzle sizing chart below. Alternatively advise of the flow and pressure of the machine the product will be operating with in the comments box at checkout. It is important to release the trigger when turning the switch over valve.