We are in love with these. No, seriously. They are great at removing heavy oxidation or even paint from aluminum extrusions.
We sell them in three grits (120, 80 or 50) and two diameters (1 inch or 2 inch). The large 3" size shown in some photos is no longer available.
The little bristles are made of rubber mixed with abrasive grit. They wear down with use.
Price is each. Yes, they are pricey but they are SO worth it.
They use a Roloc style attachment. Black rubber Roloc holders for mini die grinders are sold separately or can be picked up at many auto parts stores.
Choose a variety for all applications.