5-Piece HSS Step Drill Bit, Black and Gold (Sizes #1 - #5) 6" HSS Aircraft Fractional Drills The length between the chucking

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

high-tensile strength materials such as aluminum

Single flute countersinks are great for chamfering

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

5-Piece HSS Step Drill Bit, Black and Gold (Sizes #1 - #5) 6" HSS Aircraft Fractional Drills The length between the chuckingDescription 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