I am using only the hand sprayer and the sprayer holster toilet mount.
The diameter of the T-valve with water pressure control is too narrow for my toilet plumbing. Consequently, it's unusable as far as I am concern, because I don't want to add additional adapters. That would make the setup too complicated.
The metal spiral hose looks very weak and of poor quality. There is no way I would connect that hose to the toilet plumbing. I certainly wish to avoid any risk of leaks.
The sprayer holster toilet mount could be secured better if there was an additional bolt and nut to connected to the plastic holder that hangs from the toilet tank. Currently the plastic hook connects to the holster with ONE bolt/nut set only. However, it still does the job, so no big deal.
I really like the hand sprayer. I like that I can lock it on the ON position without having to hold down the ON/OFF button.
However, it's my opinion that the ON/OFF mechanism should be reversed.
Currently to shut off the water flow one has to push the ON/OFF button UP with the index finger while reaching down with your hand. I think that makes it more difficult.
It would be easier to shut off the water flow pushing the ON/OFF button DOWN with the thumb finger.
My advice to anyone who wants to buy this product is to buy ONLY the hand sprayer. I know that greatofferstock.com sells the hand sprayer by itself at a very reasonable price. The rest of the elements you can buy at your local hardware store. I think that would be the best option.
Despite all the negatives, I find the hand sprayer very, very useful and I am very pleased with it. It has improved my hygiene routine tremendously.
So, I'm a happy customer.