The Mirka DEOS 353CV (81 x 133mm) and Mirka DEOS 383CV (70 x 198mm) backing pads are not interchangeable.
An extension pad is available for the Mirka DEOS 353CV, which measures 81 x 165mm and enables the user to sand further into narrow places.
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Do Mirka sanders come with a pad wrench?
Answer: A wrench is supplied for changing the backing pad on a Mirka DEROS, Mirka PROS or Mirka ROS. You can find it located in the original packaging of the sander.
