Editorial Review:

The Porter Cable 7424 Dual Action Polisher is designed to move both in an orbital motion and a jiggling motion. With all that movement, the polisher may become unbalanced and the user has to compensate for the added wobbling. This problem is easily corrected with a counterweight. The counterweight fits on the eccentric housing, located just above the backing plate. This is the part that causes the plate to spin. The semi-circular weight spins with your backing plate to balance out any irregular motion and make the Porter Cable operate more smoothly. With the addition of a counterweight, your Porter Cable 7424 will work like a charm and render a perfectly uniform finish every time.

Customer Reviews:

Avg. Customer Rating: 3.0 / 5.0

Maybe you don't need this... I didn't:

I thought I was ordering something I needed, but the orbital sander-polisher I was buying at the same time, and which this was intended for, already had one installed on it.

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