Aluminum Oxide Grit is a sharp, long-lasting abrasive media that is highly efficient and highly reusable/recyclable thus cost-effective in nature. Harder than most blast media, Aluminum Oxide Blast Media, the powder will clean and etch quickly on all types of surfaces. Grits of this abrasive media are best for preparing the surface for the polishing and coating of blasting surfaces. It is also used often for surface cleaning because of the rugged nature of this blasting media.