Review on Pfister 9510390 Avalon/Marielle/Treviso 26 Series Diverter: Enhance Your Faucet with Precision Control by Jim Acquista

Works well but short lived; they must be changed frequently. Nothing with Revain, it's all about Pfister and design - they just don't last. It's pretty easy to take off the old one and put on the new one, but you can do yourself a favor by watching a YouTube video on how to take them off and put them on. This is a good idea, no tools are required other than needle nose pliers to remove the horseshoe clip. You will think this method won't work, but you will find that you are not pulling hard enough. Ed