Pricing mentioned is for EA. Requires a minimum buy of 1 piece. Depressed Center Cut-Off Wheel, 4 1/2 inch Diameter, .045 Inch Thick, 30 Grit, Aluminum Oxide; Hazmat=False; Features=Long service life;Fast, free cutting performance;Suitable for universal cut-off applications on steel, cast iron and non-ferrous metals; StandardPack=25EA/BOX; CountryOfOrigin=DE; Abrasive Material=Aluminum Oxide; Applicable Materials=Cast Iron, Non-Ferrous Metals, Steel; Applications=Universal cutting on steel, cast iron and non-ferrous metals; Arbor Diameter = 7/8 in; Bond=Resin; Color=Gray; Diameter=4 1/2 in; Grit=30; Hardness Grade=S; Mounting=Arbor; Speed=13300 rpm [Max]; Style=Depressed Center Cut-Off Wheel; Thickness=0.0450 in; Tool Shape=Type 27; Type=Universal Cut-Off Wheel; Used With=Angle Grinders;