5-Piece HSS Step Drill Bit, Black and Gold (Sizes #1 - #5) 6" HSS Aircraft Fractional Drills and form-relieved to ensure a

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

and titanium

The length between the chucking slot on the shank to the end of the shank is a standard 3/8"

Single flute countersinks are great for chamfering

high-tensile strength materials such as aluminum

5-Piece HSS Step Drill Bit, Black and Gold (Sizes #1 - #5) 6" HSS Aircraft Fractional Drills and form-relieved to ensure aDescription 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