The popular double nozzle kit is the same nozzle that is provided with the StreemMaster Master Pack but in two different colours. Ideal if you share your StreemMaster, or want to have spare nozzles The nozzle is carefully designed and manufactured to ensure it's super smooth and comfortable. The unique design has a safety ridge to ensure that the threads are away from your sensitive rectal skin while in use, no other design we've come across has this safety feature. As well Streem Master designed the internal part of the nozzle to control water velocity through all of the holes. You'll notice that water emerging from the five holes of the nozzle comes together to create a steady stream of water!!! Streem Master also took great care in the manufacturing so that all the holes have very soft rounded edges. Dishwasher ready, boilable, and easy to clean. To make sure our system is most convenient Stream Master made sure their nozzle works with any standard shower hose. Made in China