3M Hookit Soft Interface Pad, 05771, 3 in, 10 per case 3M United States 3M 20278 Clean Sanding Soft Interface Disc Pad for sale online eBay 3M 20278 Cubitron Clean Sanding Soft Interface Disc Pad, Multi Hole, 5 3M Clean Sanding Soft Interface Disc Pad (5, 6) 3M Hookit Soft Interface Pad, 51127, 10 mm, Multi Hole, Soft, 10 per. 3M 20278 5" Soft Interface Pad Soft Interface Pad (to be inserted in between the backing plate and the pad), increases conformability, allowing the technician to follow contours and get in closer to most edges. Constructed of a soft durable foam. Also enables a more versatile uses with specific and more rigid pads, such as Rupes MF pads.