This is a Makita stainless steel cutting disc with a 230mm diameter and a thickness of 2.0mm.Model Number: B-12220Dimensions: 230 mm (Diameter) x 2.0 mm (Thickness) x 22.2 mm (Arbor Hole)Safety Standards: Compliant with EN 12413 standards.Application: Specifically designed for cutting stainless steel (INOX) materials.