This Dual Action Backing Plate is a 90mm cushioned 5/16" threaded backing plate for 'dual action' orbital use machines only, fits all Meguiars G220 polishers and dodo juice, DAS6 & Porter Cable machines etc. A 90mm - 3 1/2" cushioned 5/16" threaded backing plate for da / orbital use, suitable for use with any 100mm - 4" foam pads.
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