Griton Professional Surface Preparation Wheels are great for preparing steel, stainless steel, aluminum and non-ferrous metals before coating and painting. These industrial quality surface preparation wheels are excellent at removing paint, rust, oxidation and weld discoloration. Use these Griton Professional Surface Preparation discs to clean tools and engine parts and much more. They are made from a non-woven fiber mesh that is infused with an aluminum oxide abrasive grain.