Slow Speed Points Silicon Carbide Grain

Contact. abrasive stone. Steel Grit. Steel grit is an aggressive metallic abrasive (high carbon) that is used for smooth blasting, removing rust, roughing and matting.
Three natural abrasives are commonly used for polishing and cleaning metal: enamel finishes, plastic, and tile. Pumice is a stone, not a mineral, a volcanic product with a very fine grain. Its hardest mineral is quartz, so it has a gentler action than sanding abrasives.