3M 20278 Cubitron Clean Sanding Soft Interface Disc Pad, Multi Hole, 5 3m Interface Pad 3M Hookit Soft Interface Pad, 51127, 10 mm, Multi Hole, Soft, 10 per Soft Interface Pad 150mm x 5mm, 2 Pack 203348 by Festool 3M 05771 5771 Soft Interface Pad 3" 3M Clean Sanding Soft Interface Disc Pad (5, 6). 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.