Moen faucets employ a cartridge that is replaceable. However make certain that you properly identify the brand name of the faucet to get identical replacement parts. If the handles are stuck, you can buy a "handle puller" to remove the handles. It's quite a handy tool to have and won't cost you an arm or a leg. You can go to your local plumbing supply house with the knobs and they will gladly help you out. That's the beauty of having a name brand faucet like Moen or Delta. The parts are available. Good Luck, plumber Tom, Philadelphia,Pennsylvania

PlumbingSupply.US has all Moen parts. They are a very reliable supply house. PlumbingSupply.US probably has the part you need at a very good price. They can ship worldwide. Very knowledgeable sales department.

Thanks so much Plumber Tom and Mandingo for your help. I appreciate the information.

Thanks, David J.

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