Right Angle Grinder.
A24N: N-grade bond for fast stock removal; for metal and stainless.
A24R: #1 selling 1/4″ depressed center grinding wheel; R-grade bond for long life and excellent stock removal.
ZA24T: Zirconia grain is sharper, cuts faster, and lasts longer than aluminum oxide. T-grade bond for fast cutting and long life; recommended for steel, cast iron, stainless steel.
WA24S: Contaminate-free design for fast cutting of stainless steel, ferrous metals, food grade, and nuclear applications. -grade bond. Less than 0.1% iron sulfur or chlorine for rust and corrosion free results.
See also Additional Info file on above web sites.