3M Interface Pad, 5 in x 1 2 in x 3 4 in 31 Holes 3M Ireland 3M 75mm Soft Interface Pad (3 inch) 3M Soft Interface Disc Pad 3M Canada 3M Hookit Soft Interface Pad. 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.