The 5" Sanding Interface Pad should be mounted between the face of the dual action sander and the sanding disc itself, as shown below.
KOVAX 971-0039 Super-Tack Micro-Hook 7 Hole 6 Inch Sanding Interface Pad (2 ct)
LRSRP5ETNHIFP-1 (EACH) 5'' SANDING INTRERFACE PAD (EACH)
SET INTERFACE PAD + SANDING SUPERFINE SHEET 3,3" x 5,5" GRIT 1500/2000/3000 5 EA
SET INTERFACE PAD + SANDING SUPERFINE SHEET 3,3" x 5,5" - GRIT 3000 - BOX OF 50
SET INTERFACE PAD + SANDING SUPERFINE SHEET 3,3" x 5,5" - GRIT 2000 - BOX OF 50
SET INTERFACE PAD 6" + SANDING SUPERFINE DISC 6'' - GRIT 1500/2000/3000 5 PCS EA
