1″ 90° – 1 Flute Hyper Countersink • HSS • For Chamfering, deburring, and countersinking • Can also be used to enlarge holes in sheet metal List Number ZD65100 Fractional 1" Decimal Equivalent 1.0000 Overall Length 2-3/4 Substrate HSS Angle 90° Package Quantity 1 Shank 1/2 Flute Count 1 SKU: ZD65100 Category: Countersinks Related products 1/4 82° – 1 Flute Solid Carbide Countersink Item #: SC08251 3/8 60° – 1 Flute Solid Carbide Countersink Item #: SC08377 1/2 90° – 1 Flute Solid Carbide Countersink Item #: SC08500