Thin Kerfs design provides for a thin cut; draws less power/less resistance; and allows your power tool to work at its full potential, Diameter 4-1/2 -inch, Thickness: 0.040 inch, Arbor: 7/8 -inch, Type 1: flat, Recommended use cutting, Tool use angle grinders, Materials metal and stainless-steel, Quantity: (1) 4-1/2 -inch x 0.040 -inch x 7/8 -inch metal cut-off disc