Fresh Water Adjustable Nozzle Retrofit Universal Bidet Toilet Seat Sprayer DIY does not require any plumber.The product is in form of Kit with instructions for installation Nozzle adjustable for convenience and effectiveness for both sexes. May not fit some toilets please see all pics for compatibility. The T- connector of this bidet is not compatible for the toilets on Recreational Vehicles. Uses Fresh water and a longer hose may be used to have room temperature for comfort. Sold separately Only Bidets with a Ying Yang Logo on them are sold by Simple Ideas LLC