The G12SR4M 4 1/2" Angle Grinder removes casting fin, finishes various types of steel, bronze and aluminum materials and castings, grinds welded sections, sections cut by means of an acetylene torch, synthetic resins, slate, brick and marble. With it's small grip diameter, high output power and overload durability, it delivers great performance. This grinder comes with 5 grinding wheels and a carrying case.