Best for steel/ stainless steel.  12" x 3/32" x 1"-- A30R.  Box of 10.

A 24 M --Aluminum oxide wheels for general purpose use on steel and other ferrous metals larger chop saw applications. Excellent rate of cut.  Good wheel life.

A 30 P -- Aluminum oxide wheels constructed with a single internal reinforcement and an aggressive cool cutting formulation best for cutting smaller diameter metals or metal studs.

A 30 R -- Aluminum oxide wheels for general purpose use on steel and other ferrous metals.  Good rate of cut.  Good wheel life.

A 30 S -- Aluminum oxide wheels specially formulated for dry wall stud applications.  Good rate of cut.  Good wheel life.