Pricing mentioned is for EA. Requires a minimum buy of 1 piece. High Speed Steel Countersinks; Hazmat=False; Features=Available in 1/2", 5/8" and 3/4" Diameters;High Speed Steel Countersinks are milled and precision ground to 82' for countersinking into most machinable materials, including iron, steel, soft metals, plastic or wood; StandardPack=5EA/BOX; CountryOfOrigin=CN; Applicable Materials=Most Metals, Plastic, Wood; Cutting Diameter = 1/2 in; Cutting Edge Material=HSS; Diameter=1/2 in; Overall Length=1 5/8 in; Shank Type=Round; Structure=Solid; Type=Countersink;