5-Piece HSS Step Drill Bit, Black and Gold (Sizes #1 - #5) 6" HSS Aircraft Fractional Drills The 135° split point tip

The 135° split point tip ensures fast starts and precise drilling with less walking

and form-relieved to ensure a 100° countersink angle concentricity

it runs up to 30% faster than standard M2 high speed steel

and titanium

high-tensile strength materials such as aluminum

5-Piece HSS Step Drill Bit, Black and Gold (Sizes #1 - #5) 6" HSS Aircraft Fractional Drills The 135° split point tipDescription Black and gold surface treated A single bit can be used for drilling a wide range of hole sizes in metal, plastic, and wood. The exclusive single radial concave flute creates perfectly round holes in metal, plastic, wood, and other thin materials without the need for center punching. Constructed of industrial grade high speed molybdenum steel, heat treated and temperature for long life Automatically deburrs the top side of the hole. Ideal