The medium density foam provides some conformability for latter stages of surface sanding, and the 3M Hookit attachment style add the ease of a hook-and-loop attachment for easy changes and reuse, optimizing disc life. When used with a vacuum and a Clean Sanding abrasive disc, the series of uniquely designed holes and channels allows dust to be pulled through the holes and away from the sanding surface to prevent loading, increase productivity, and provide a cleaner work environment. The disc pad has external threads compatible with an orbital or random orbital sander.
The Clean Sanding dust-management system evacuates dust from the work surface better than 5- or 6-hole products, dramatically increasing disc life and maximizing cut-rate. Optimized with a self-generated vacuum sanding tool fitted with a Clean Sanding filter bag (sold separately), Clean Sanding products allow the vacuum to suction dust from the air and off of the workpiece. This reduces loading of the disc and adds life to the abrasive. Additionally, reducing dust in the air improves working conditions. You can also pair Clean Sanding abrasives with Clean Sanding disc pads for use on a central-vacuum-ready sander.

3M 08858 Scotch-Brite Surface Conditioning Belt, 1/2 in x 18 in, A CRS, 7000028455
Dynabrade 40320 Dynafile II Abrasive Belt Tool
Dynabrade 96101 Dynabrade Air Lube 10W/NR 24 Per Box
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
3M 33780, 641WY 1/4" X 24", 400 Mesh Diamond Cloth Belt, 7010534915
3M 22396, Roloc Disc 361F, 36 YF-weight, TR, 1-1/2 in, Die R150S, 7000045091
Dynabrade 11477 Dynabelter Abrasive Belt Tool, Heavy-Duty
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
3M 05042, Cloth Belt 384F, 80+ XF-weight, 1-1/8 in x 21 in, Fabri-lok, 7100141436, 50 per case
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
Dynabrade 51301 .5 hp Straight-Line Die Grinder
Dynabrade 53270 7" (180 mm) Dia. Right-Angle Disc Sander
3M 55065, Cubitron II Cloth Belt 984F, 36+ YF-weight, 3/4 in x 20-1/2 in, Fabri-lok, Single-flex, 7000148169, 200 per case
3M 21543, Scotch-Brite Roloc Clean and Strip XT Pro Extra Cut Disc, TR, 2 in x NH, A XCS, 7100179815, 60/box
Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty 
