The spline pattern works perfectly for Price-Pfister cartridges. However, the trim piece doesn't work with old-style cartridges. I didn't want to replace the cartridges in the wall, so instead I just spray painted the old trim with brushed-nickel color paint, and used the old trim with the new knobs. Also, I didn't need all three knobs, because I use a diverter spout in the tub. So now I have a replacement knob that I probably won't ever use. They're all exactly the same part, so I wish they would sell you the number you want, instead of forcing you to buy a set of three.
Verified purchase: Yes | Condition: New
We already have and will use it to replace old one
Verified purchase: Yes | Condition: New
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