The DEWALT Grinding Disc category offers metal grinding discs in three standard diameters—115 mm (4 ½"), 180 mm (7") and 230 mm (9")—all with a 6 mm thickness and a 22.2 mm arbor. A stainless‑steel variant is also available in the 115 mm size. This range lets buyers select the appropriate disc size for their metal‑grinding applications.