I bought this bidet attachment from groupon. Since this is my first bidet attachment, I didn't have anything previously to compare it to so giving it 5 stars would be premature, but not bad for the price, below I explain further for my rating. Installation wasn't difficult per the instructions for the standard fitment of the T-valve to the bottom of the toilet tank. There is also 5 grooves for the bolt where the bidet attachment & toilet seat connect, find out how far close you want the nozzle to the toilet rim before tightening everything in place. Performance wise, if you don't mind cold water on your below the belt area, it works, however, be careful turning the dial to the wash position, the water pressure can go from drips to full blast, so don't hurt yourself. Also, the 3 nozzle (where the water comes out) positions have to be adjusted by hand, no dial or button for that. Long story short, if you've never had a bidet or a bidet attachment & you want to try one out, this would be a good starter. I posted photos to show, didn't add a photo of dial knob on full blast wash or full blast clean.