have no idea on manuf. , but I'll bet dollars to donuts that if you pry out the blue and red dots with a knife or a dental pick you'll find the screws that hold the knobs onto the cartridge stem.

Objective is to repair it. One of the handles is rusting below. I am trying to get the cover off see what is the issue and fix it. aliceinwonderland_id - I tried to pry the cap off on top but its either really set in place or it does not come off. I can unscrew the handle and when I look inside I see the thread of screw but don't see a place where I can place the screw driver to unscrew anything. I will post picture shortly.

California Faucets Rosolina Single Handle Single Hole Pull-Down Spray Kitchen Faucet https://www.faucet.com/collection/california-faucets/rosolina?r=24&s=SCORE&p=1

Hello @Bob Heine and @sofaspud. I have an update. I turned off the main valve and this time I also turned off hot water tank's valve. Went to the bathroom faucet sink and slowly loosened the compression nut for supply lines so that I could replace the faucet. After I loosened the hot line, there was no water coming from the line which was a good sign. I proceeded to loosen the cold water line but there was steady stream of water coming out of it, it was low pressure stream. I took the chance and connected new faucet. During this process I was able to shut off the valves underneath the sink and that stopped the steady stream of water. I completed my faucet installation successfully. I turned on the water, tested the faucet and there were no leaks. Only thing I noticed is that the new faucet is dripping at a slow rate like 2 drops per minute. What could be causing slow drips from new faucet, for that matter even old faucet used to drip. And, why was the cold water line not shut off completely even though I turned off the main line. Are they connected? Could I have a leaking plumbing pipe somewhere in the system? I wanted to thank all of you 🙏 for helping me out during this journey. Mission accomplished but I am curious about those two questions.