
I have WP-881W and they fit perfectly. I wish they had different head types for this style. Many of us have different goals - some want whiter teeth, some want to brush better etc. But these fit, I'm sure they won't last very long, Sonic's are good for 3 months - but I'm guessing this one will last a long time. about a month. Other than that, I'm happy with the price - my teeth are worth the investment and they're really smooth, so I'll order again!

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