Irwin 90583 Countersink Drill Bit #8-9

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"IRWIN INDUSTRIAL" DRILL BIT High speed steel, quickly and accurately countersink, deburr and chamfer in iron, steel, soft metal, plastic, wood and other machinable materials. Five -flute design with 82 degree point for smooth chamfering. For drilling and countersinking in one fast action. Ideal for use in wood and plastic. Counter bore Diameter 3/8". Quick change 1/4" hex shank countersink. Includes hex key to change drill bit. For use in wood. Adjustable #8-9 countersink. Show more