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A: This is for Delta bath and shower faucets that use the stainless steel ball valve. See attached photo. If you have this ball (or similar ball with different looking stem), then this kit will work, however, I have not tried this brand. I tried Danco brand and they don't fit well and wear out quickly. So I always buy genuine Delta brand parts and my faucets hold up for many years without leaks. If you don't have this ball (or similar ball with different looking stem), then this kit won't do you any good. You can go to the official Delta website and search through there to find your faucet, then you can download a parts list to obtain a part number for the cartridge in your faucet. Hope this helps you out.