3M Clean Sanding Soft Interface Disc Pad (5, 6) 3M Hookit Soft Interface Pad, 150 mm, 25 hole, 05777 3M 3m 20278 5 Soft Interface Pad 3M Hookit Soft Interface Pad, 05771 3 3M Soft interface Pad 150 mm zeer soepele en zachte steunschijf partnr. 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.