Home Products Hand Sanding Block PH18507 Dust-Free Sanding Block (Blue Shield),5 inch, 6+1 holes PH18507 PH18507 Dust-Free Sanding Block (Blue Shield),5 inch, 6+1 holes 5 inch(6+1 hole) * Central Vaccum Type H18507 : Dust-Free Sanding Block (Blue Shield), 5 inch, 6+1 holes 1504220