This multi-hole 125mm diameter, intermediate pad from Bosch will fit a many different brands and models of 125mm random orbit and dual action sanders.
The multi-hole configuration ensures effective extraction on many different makes of sander. It is mm thick with a hook and loop attachment, and simply fits between your sander and chosen abrasive disc. The pad greatly prolongs the life of the backing pad on your sander. The pad minimises wear of the sanding pad; by reducing heat build-up that can render the original hook and loop ineffective.
Simply peel off and discard when the pad eventually wears out. The pad comes as a pack of 2, so you will immediately have a spare to hand.