The Mirka 150mm Medium Backing Pad is for electric orbital sanders – perfect for use with the 150mm Deros Sander. Delivered with one pad protector and user instructions. Mirka has developed backing pads for sanding dust-free with Mirka’s Net Sanding dust extraction system. Designed to be used on a DEROS sander this 150mm (6″) backing pad has a central air inlet. The air channels leading to the center of the backing pad has an increased air flow and therefore the dust is removed efficiently.