3M Hookit Soft Interface Pad, 150 mm x 5 mm, Multihole, Soft, 51126 3M Clean Sanding Soft Interface Disc Pad 28321, 5 in x 1 2 in 44 Holes 3M 7010328334 56459 Stikit Soft Interface Disc Pad Lighting Supply 3M 75mm Soft Interface Pad (3 inch) 3M 75mm Soft Interface Pad (3 inch). 3M 28322 6" 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.