Eraser Wheel has serrations for improved cooling effect air flow.
Dynabrade surface grinding wheel has a diameter of 4 in. The quick change attachment allows for easy mounting to the tool or pad. In addition to the other aspects of these parts, another important component of these is the thickness. This Dynabrade part is 1 1/4 in thick. All abrasive products that rotate or spin, such as the ones in this category, have a maximum speed at which you can run them. This Dynabrade surface grinding wheel can be run at a maximum speed of 4000 RPMs.

3M 45179, Roloc Disc Pad TR, Medium 4 in 1/4-20 Internal, 7000045281
Dynabrade 95843 Dynabrade Air Lube 10W/NR, 1 Gallon
Dynabrade 11518 Rubber Drive Wheel
Dynabrade 11486 Dynabelter Accu-Grinder Abrasive Belt Tool, Heavy-Duty
Dynabrade 95842 Dynabrade Air Lube 10W/NR, 1 Pint
Dynabrade 64404 36" W x 60" L (914 mm W x 1,524 mm L) Metal Capture Downdraft Table, 230 V (AC), Side Exhaust
Dynabrade 54705 Rotor/Vane Set
Dynabrade 51301 .5 hp Straight-Line Die Grinder
Dynabrade 10690 Filter/Regulator/Lubricator, FRL40, 1/2" NPTAssy.
Dynabrade 25234 Vane Set (4pk)
Dynabrade 40378 Rubber Drive Wheel, Mini Dynafile II
Dynabrade 11476 Dynabelter Abrasive Belt Tool, Heavy-Duty
Dynabrade 11475 Dynabelter Abrasive Belt Tool, Standard Duty
Dynabrade 13509 Dynastraight Finishing Tool, Rear Exhaust, 6,000 RPM, 5/8" (16 mm) or 1" (25 mm) Dia. Arbor
Dynabrade 14010 Dynafile Abrasive Belt Tool Versatility Kit 
