3M Hookit Soft Interface Pad, 05771 3 3M Soft interface Pad 150 mm zeer soepele en zachte steunschijf partnr 3M Hookit Soft Interface Pad, 150 mm x 5 mm, Multihole, Soft, 51126 3M 20278 Cubitron Clean Sanding Soft Interface Disc Pad, Multi Hole, 5 3M 20278 Clean Sanding Soft Interface Disc Pad Multihole 125mm eBay UK. 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.