For a disc that cuts faster and lasts longer than aluminum oxide and zirconia while providing a sensible initial price, choose this Merit Ceramic Alumina Plus C/A medium grit TR (Type III) quick-change cloth disc. With a self-lubricating grain treatment that reduces heat on materials resistant to grinding, this medium grit disc is an excellent choice for removing burrs and imperfections from soft metals, including titanium, aluminum and carbon steel. A strong Y-weight two-ply polyester backing offers longevity and adheres firmly to the grain.